Exhibit 4.16

          -----------------------------------------------------------------





                            REGISTRATION RIGHTS AGREEMENT




                                 Dated March 11, 1997




                                        among




                              ICG COMMUNICATIONS, INC.,



                                  ICG HOLDINGS, INC.


                                         and


                          MORGAN STANLEY & CO. INCORPORATED





          -----------------------------------------------------------------


     



                            REGISTRATION RIGHTS AGREEMENT



                    THIS REGISTRATION RIGHTS AGREEMENT (the "Agreement") is
          made and entered into March 11, 1997, among ICG HOLDINGS, INC., a
          Colorado corporation ("Holdings"), ICG COMMUNICATIONS, INC., a
          Delaware corporation ("ICG"), and MORGAN STANLEY & CO.
          INCORPORATED (the "Placement Agent").

                    This Agreement is made pursuant to the Placement
          Agreement dated March 6, 1997, among Holdings, ICG and the
          Placement Agent (the "Placement Agreement"), which provides for
          the sale by Holdings and ICG to the Placement Agent
          of (i) 100,000 shares of Holdings' 14% Exchangeable Preferred
          Stock, which will be mandatorily redeemable in 2008 (the
          "Shares"), as set forth in the Second Amended and Restated
          Articles of Incorporation of Holdings and will be exchangeable,
          at the option of Holdings, in whole but not in part, into Senior
          Subordinated Exchange Debentures due 2008 (the "Exchange
          Debentures") to be issued, if applicable, pursuant to an
          Indenture to be dated as of the date of such exchange (the
          "Exchange Indenture") and (ii) $176,000,000 million aggregate
          principal amount at maturity of 11 % Senior Discount Notes due
          2007 of Holdings (the "Notes") issued pursuant to the provisions
          of an Indenture to be dated as of the date hereof (the
          "Indenture") among Holdings, ICG and Norwest Bank Colorado,
          National Association, as trustee (in such capacity, the
          "Trustee").  The obligations of Holdings under the Notes and the
          Indenture, and under the Exchange Debentures and the Exchange
          Indenture when issued, will be guaranteed by ICG on a senior
          unsecured basis and a senior subordinated unsecured basis,
          respectively, pursuant to the terms of the Indenture (the "Note
          Guarantee") and the Exchange Indenture, respectively.  In order
          to induce the Placement Agent to enter into the Placement
          Agreement, Holdings and ICG have agreed to provide to the
          Placement Agent and its direct and indirect transferees the
          registration rights with respect to the Notes and the Note
          Guarantee set forth in this Agreement.  The execution of this
          Agreement is a condition to the closing under the Placement
          Agreement.

                    In consideration of the foregoing, the parties hereto
          agree as follows:

                    1.   Definitions.
                         -----------

                    As used in this Agreement, the following capitalized
          defined terms shall have the following meanings:

                    "1933 Act" shall mean the Securities Act of 1933, as
                     --------
               amended from time to time.

                    "1934 Act" shall mean the Securities Exchange Act of
                     --------
               1934, as amended from time to time.

                    "Accreted Value" shall have the meaning set forth in
                     --------------
               the Indenture.

                    "Closing Date" hall mean the Closing Date as defined in
                     ------------
               the Placement Agreement.

                    "Exchange Offer" shall mean the exchange offer by
                     --------------
               Holdings of Exchange Notes for Registrable Notes pursuant to
               Section 2(a) hereof.

                    "Exchange Offer Registration" shall mean a registration
                     ---------------------------
               under the 1933 Act effected pursuant to Section 2(a) hereof.

                    "Exchange Offer Registration Statement" shall mean an
                     -------------------------------------
               exchange offer registration statement on Form S-4 (or, if
               applicable, on another appropriate form) and all amendments
               and supplements to such registration statement, in each case
               including the Prospectus contained therein, all exhibits
               thereto and all material incorporated by reference therein.

                    "Exchange Notes" shall mean securities issued by
                     --------------
               Holdings and guaranteed by ICG under the Indenture
               containing terms identical to the Notes (except that
               (i) interest thereon shall accrue from the last date on
               which interest was paid on the Notes or, if no such interest
               has been paid, from March 15, 2002 and (ii) the Exchange
               Notes will not provide for an increase in the rate of
               interest and will not contain terms with respect to transfer
               restrictions) and to be offered to Holders of Notes in
               exchange for Notes pursuant to the Exchange Offer.

                    "Holder" shall mean the Placement Agent, for so long as
                     ------
               it owns any Registrable Notes, and each of its successors,
               assigns and direct and indirect transferees who become
               registered owners of Registrable Notes under the Indenture;
               provided that for purposes of Sections 4 and 5 of this
               --------
               Agreement, the term "Holder" shall include Participating
               Broker-Dealers (as defined in Section 4(a)).

                    "Holdings" shall have the meaning set forth in the
                     --------
               preamble and shall also include Holdings' successors.

                    "ICG" shall have the meaning set forth in the preamble
                     ---
               and shall also include ICG's successors.

                    "Indenture" shall have the meaning set forth in the
                     ---------
               preamble.

                    "Majority Holders" shall mean the Holders of a majority
                     ----------------
               of the aggregate principal amount of outstanding Registrable
               Notes; provided that whenever the consent or approval of
                      --------
               Holders of a specified percentage of Registrable Notes is
               required hereunder, Registrable Notes held by Holdings or
               any of its affiliates (as such term is defined in Rule 405
               under the 1933 Act) (other than the Placement Agent or
               subsequent holders of Registrable Notes if such subsequent
               holders are deemed to be such affiliates solely by reason of
               their holding of such Registrable Notes) shall not be
               counted in determining whether such consent or approval was
               given by the Holders of such required percentage or amount.

                    "Person" shall mean an individual, partnership,
                     ------
               corporation, trust or unincorporated organization, or a
               government or agency or political subdivision thereof.

                    "Placement Agent" shall have the meaning set forth in
                     ---------------
               the preamble.

                    "Placement Agreement" shall have the meaning set forth
                     -------------------
               in the preamble.

                    "Prospectus" shall mean the prospectus included in a
                     ----------
               Registration Statement, including any preliminary
               prospectus, and any such prospectus as amended or
               supplemented by any prospectus supplement, including a
               prospectus supplement with respect to the terms of the
               offering of any portion of the Registrable Notes covered by
               a Shelf Registration Statement, and by all other amendments
               and supplements to such prospectus, and in each case
               including all material incorporated by reference therein.

                    "Registrable Notes" shall mean the Notes; provided,
                     -----------------                        --------
               however, that the Notes shall cease to be Registrable Notes
               -------
               (i) when a Registration Statement with respect to such Notes
               shall have been declared effective under the 1933 Act and
               such Notes shall have been disposed of pursuant to such
               Registration Statement, (ii) when such Notes have been sold
               to the public pursuant to Rule 144(k) (or any similar
               provision then in force, but not Rule 144A) under the 1933
               Act or (iii) when such Notes shall have ceased to be
               outstanding.

                    "Registration Expenses" shall mean any and all expenses
                     ---------------------
               incident to performance of or compliance by Holdings and ICG
               with this Agreement, including without limitation:  (i) all
               SEC, stock exchange or National Association of Securities
               Dealers, Inc. registration and filing fees, (ii) all fees
               and expenses incurred in connection with compliance with
               state securities or blue sky laws (including reasonable fees
               and disbursements of counsel for any Underwriters or Holders
               in connection with blue sky qualification of any of the
               Exchange Notes or Registrable Notes), (iii) all expenses of
               any Persons in preparing or assisting in preparing, word
               processing, printing and distributing any Registration
               Statement, any Prospectus, any amendments or supplements
               thereto, any underwriting agreements, securities sales
               agreements and other documents relating to the performance
               of and compliance with this Agreement, (iv) all rating
               agency fees, if any, (v) all fees and disbursements relating
               to the qualification of the Indenture under applicable
               securities laws, (vi) the fees and disbursements of the
               Trustee and its counsel, (vii) the fees and disbursements of
               counsel for Holdings and ICG and, in the case of a Shelf
               Registration Statement, the fees and disbursements of one
               counsel for the Holders (which counsel shall be selected by
               the Majority Holders and which counsel may also be counsel
               for the Placement Agent) and (viii) the fees and
               disbursements of the independent public accountants of
               Holdings and ICG, including the expenses of any special
               audits or "cold comfort" letters required by or incident to
               such performance and compliance, but excluding fees and
               expenses of counsel to the Underwriters (other than fees and
               expenses set forth in clause (ii) above) or the Holders and
               underwriting discounts and commissions and transfer taxes,
               if any, relating to the sale or disposition of Registrable
               Notes by a Holder.

                    "Registration Statement" shall mean any registration
                     ----------------------
               statement of Holdings and ICG that covers any of the
               Exchange Notes or Registrable Notes pursuant to the
               provisions of this Agreement and all amendments and
               supplements to any such Registration Statement, including
               post-effective amendments, in each case including the
               Prospectus contained therein, all exhibits thereto and all
               material incorporated by reference therein.

                    "SEC" shall mean the Securities and Exchange
                     ---
               Commission.

                    "Shelf Registration" shall mean a registration effected
                     ------------------
               pursuant to Section 2(b) hereof.

                    "Shelf Registration Statement" shall mean a "shelf"
                     ----------------------------
               registration statement of Holdings and ICG pursuant to the
               provisions of Section 2(b) of this Agreement which covers
               all of the Registrable Notes on an appropriate form under
               Rule 415 under the 1933 Act, or any similar rule that may be
               adopted by the SEC, and all amendments and supplements to
               such registration statement, including post-effective
               amendments, in each case including the Prospectus contained
               therein, all exhibits thereto and all material incorporated
               by reference therein.

                    "Trustee" shall have the meaning set forth in the
                     -------
               preamble. 

                    "Underwriters" shall have the meaning set forth in
                     ------------
               Section 3 hereof.

                    "Underwritten Registration" or "Underwritten Offering"
                     -------------------------      ---------------------
               shall mean a registered offering in which Registrable Notes
               are sold to an Underwriter for reoffering to the public.

                    2.   Registration Under the 1933 Act.
                         -------------------------------

                    (a)  To the extent not prohibited by any applicable law
          or applicable interpretation of the Staff of the SEC, Holdings
          and ICG shall cause to be filed an Exchange Offer Registration
          Statement covering the offer by Holdings and ICG to the Holders
          to exchange all of the Registrable Notes for Exchange Notes, to
          have such Registration Statement declared effective by the SEC
          and remain effective until the closing of the Exchange Offer and
          to consummate the Exchange Offer on or prior to September 11,
          1997.  Holdings and ICG shall commence the Exchange Offer
          promptly after the Exchange Offer Registration Statement has been
          declared effective by the SEC and use their best efforts to have
          the Exchange Offer consummated on or prior to September 11, 1997. 
          Holdings and ICG shall commence the Exchange Offer by mailing the
          related exchange offer Prospectus and accompanying documents to
          each Holder stating, in addition to such other disclosures as are
          required by applicable law:

                    (i)  that the Exchange Offer is being made pursuant to
               this Agreement and that all Registrable Notes validly
               tendered will be accepted for exchange;

                    (ii) the dates of acceptance for exchange (which shall
               be a period of at least 30 days from the date such notice is
               mailed) (the "Exchange Dates");

                    (iii)     that any Registrable Note not tendered will
               remain outstanding and continue to accrete in value (until
               March 15, 2002 and thereafter will accrue interest), but
               will not retain any rights under this Agreement;

                    (iv) that Holders electing to have a Registrable Note
               exchanged pursuant to the Exchange Offer will be required to
               surrender such Registrable Note, together with the enclosed
               letters of transmittal, to the institution and at the
               address (located in the Borough of Manhattan, The City of
               New York) specified in the notice prior to the close of
               business on the last Exchange Date; and

                    (v)  that Holders will be entitled to withdraw their
               election, not later than the close of business on the last
               Exchange Date, by sending to the institution and at the
               address (located in the Borough of Manhattan, The City of
               New York) specified in the notice a telegram, telex,
               facsimile transmission or letter setting forth the name of
               such Holder, the principal amount of Registrable Notes
               delivered for exchange and a statement that such Holder is
               withdrawing his election to have such Notes exchanged.

                    As soon as practicable after the last Exchange Date,
          Holdings shall:

                    (i)  accept for exchange Registrable Notes or portions
               thereof tendered and not validly withdrawn pursuant to the
               Exchange Offer; and

                    (ii) deliver, or cause to be delivered, to the Trustee
               for cancellation all Registrable Notes or portions thereof
               so accepted for exchange by Holdings and issue, and cause
               the Trustee to promptly authenticate and mail to each
               Holder, an Exchange Note equal in principal amount to the
               principal amount of the Registrable Notes surrendered by
               such Holder.

          Holdings and ICG shall use their best efforts to complete the
          Exchange Offer as provided above and shall comply with the
          applicable requirements of the 1933 Act, the 1934 Act and other
          applicable laws and regulations in connection with the Exchange
          Offer.  The Exchange Offer shall not be subject to any
          conditions, other than that the Exchange Offer does not violate
          applicable law or any applicable interpretation of the Staff of
          the SEC.  Holdings shall inform the Placement Agent of the names
          and addresses of the Holders to whom the Exchange Offer is made,
          and the Placement Agent shall have the right, subject to
          applicable law, to contact such Holders and otherwise facilitate
          the tender of Registrable Notes in the Exchange Offer.

                    (b)  In the event that (i) Holdings and ICG determine
          that the Exchange Offer Registration provided for in Section 2(a)
          above is not available or may not be consummated as soon as
          practicable after the last Exchange Date because it would violate
          applicable law or the applicable interpretations of the Staff of
          the SEC, (ii) the Exchange Offer is not for any other reason
          consummated on or prior to September 11, 1997 or (iii) in the
          opinion of counsel for the Placement Agent a Registration
          Statement must be filed and a Prospectus must be delivered by the
          Placement Agent in connection with any offering or sale of
          Registrable Notes, Holdings and ICG shall use their best efforts
          to cause to be filed as soon as practicable after such
          determination, date or notice of such opinion of counsel is given
          to Holdings and ICG, as the case may be, a Shelf Registration
          Statement providing for the sale by the Holders of all of the
          Registrable Notes and to have such Shelf Registration Statement
          declared effective by the SEC.  In the event Holdings and ICG are
          required to file a Shelf Registration Statement solely as a
          result of the matters referred to in clause (iii) of the
          preceding sentence, Holdings and ICG shall file and have declared
          effective by the SEC both an Exchange Offer Registration
          Statement pursuant to Section 2(a) with respect to all
          Registrable Notes and a Shelf Registration Statement (which may
          be a combined Registration Statement with the Exchange Offer
          Registration Statement) with respect to offers and sales of
          Registrable Notes held by the Placement Agent after completion of
          the Exchange Offer.  Holdings and ICG agree to use their best
          efforts to keep the Shelf Registration Statement continuously
          effective until the period referred to in Rule 144(k) or until
          all of the Registrable Notes covered by the Shelf Registration
          Statement have been sold pursuant to the Shelf Registration
          Statement.  Holdings and ICG further agree to supplement or amend
          the Shelf Registration Statement if required by the rules,
          regulations or instructions applicable to the registration form
          used by Holdings and ICG for such Shelf Registration Statement or
          by the 1933 Act or by any other rules and regulations thereunder
          for shelf registration or if reasonably requested by a Holder
          with respect to information relating to such Holder, and to use
          their best efforts to cause any such amendment to become
          effective and such Shelf Registration Statement to become usable
          as soon as practicable thereafter.  Holdings and ICG agree to
          furnish to the Holders of Registrable Notes copies of any such
          supplement or amendment promptly after its being used or filed
          with the SEC.

                    (c)  Holdings and ICG shall pay all Registration
          Expenses in connection with the registration pursuant to Section
          2(a) or Section 2(b).  Each Holder shall pay all underwriting
          discounts and commissions and transfer taxes, if any, relating to
          the sale or disposition of such Holder's Registrable Notes
          pursuant to the Shelf Registration Statement.

                    (d)  An Exchange Offer Registration Statement pursuant
          to Section 2(a) hereof or a Shelf Registration Statement pursuant
          to Section 2(b) hereof will not be deemed to have become
          effective unless it has been declared effective by the SEC;
          provided, however, that, if, after it has been declared
          --------  -------
          effective, the offering of Registrable Notes pursuant to a Shelf
          Registration Statement is interfered with by any stop order,
          injunction or other order or requirement of the SEC or any other
          governmental agency or court, such Registration Statement will be
          deemed not to have become effective during the period of such
          interference until the offering of Registrable Notes pursuant to
          such Registration Statement may legally resume.  As provided for
          in the Indenture, in the event the Exchange Offer is not
          consummated and the Shelf Registration Statement is not declared
          effective on or prior to September 11, 1997, interest  (in
          addition to the accrual of original issue discount during the
          period ending March 15, 2002 and in addition to the interest
          otherwise due on the Notes after such date) will accrue, at an
          annual rate of 0.5% of Accreted Value on the preceding semiannual
          payment date, on the Notes from September 11, 1997, payable in
          cash semiannually in arrears on each March 15 and September 15,
          commencing March 15, 1998; provided that if a Shelf Registration
                                     --------
          Statement is required solely by the matters referred to in clause
          (iii) of the first sentence of Section 2(b), such increase in
          interest rate shall be payable only to the Placement Agent, with
          respect to Notes held by it, and only with respect to any period
          (after September 11, 1997) during which such Shelf Registration
          Statement is not effective.

                    (e)  Without limiting the remedies available to the
          Placement Agent and the Holders, Holdings and ICG acknowledge
          that any failure by Holdings and ICG to comply with their
          respective obligations under Section 2(a) and Section 2(b) hereof
          may result in material irreparable injury to the Placement Agent
          or the Holders for which there is no adequate remedy at law, that
          it will not be possible to measure damages for such injuries
          precisely and that, in the event of any such failure, the
          Placement Agent or any Holder may obtain such relief as may be
          required to specifically enforce Holdings' and ICG's obligations
          under Section 2(a) and Section 2(b) hereof.

                    3.   Registration Procedures.
                         -----------------------

                    In connection with the obligations of Holdings and ICG
          with respect to the Registration Statements pursuant to
          Section 2(a) and Section 2(b) hereof, Holdings and ICG shall as
          expeditiously as possible:

                    (a)  prepare and file with the SEC a Registration
               Statement on the appropriate form under the 1933 Act, which
               form (x) shall be selected by Holdings and ICG and
               (y) shall, in the case of a Shelf Registration, be available
               for the sale of the Registrable Notes by the selling Holders
               thereof and (z) shall comply as to form in all material
               respects with the requirements of the applicable form and
               include all financial statements required by the SEC to be
               filed therewith, and use their best efforts to cause such
               Registration Statement to become effective and remain
               effective in accordance with Section 2 hereof;

                    (b)  prepare and file with the SEC such amendments and
               post-effective amendments to each Registration Statement as
               may be necessary to keep such Registration Statement
               effective for the applicable period and cause each
               Prospectus to be supplemented by any required prospectus
               supplement and, as so supplemented, to be filed pursuant to
               Rule 424 under the 1933 Act; to keep each Prospectus current
               during the period described under Section 4(3) and Rule 174
               under the 1933 Act that is applicable to transactions by
               brokers or dealers with respect to the Registrable Notes or
               Exchange Notes;

                    (c)  in the case of a Shelf Registration, furnish to
               each Holder of Registrable Notes, to counsel for the
               Placement Agent, to counsel for the Holders and to each
               Underwriter of an Underwritten Offering of Registrable
               Notes, if any, without charge, as many copies of each
               Prospectus, including each preliminary Prospectus, and any
               amendment or supplement thereto and such other documents as
               such Holder or Underwriter may reasonably request, in order
               to facilitate the public sale or other disposition of the
               Registrable Notes; and Holdings and ICG consent to the use
               of such Prospectus and any amendment or supplement thereto
               in accordance with applicable law by each of the selling
               Holders of Registrable Notes and any such Underwriters in
               connection with the offering and sale of the Registrable
               Notes covered by and in the manner described in such
               Prospectus or any amendment or supplement thereto in
               accordance with applicable law;

                    (d)  use their best efforts to register or qualify, by
               the time the applicable Registration Statement is declared
               effective by the SEC, the Registrable Notes under all
               applicable state securities or "blue sky" laws of such
               jurisdictions as any Holder of Registrable Notes covered by
               a Registration Statement shall reasonably request in
               writing, to cooperate with such Holder in connection with
               any filings required to be made with the National
               Association of Securities Dealers, Inc. and do any and all
               other acts and things which may be reasonably necessary or
               advisable to enable such Holder to consummate the
               disposition in each such jurisdiction of such Registrable
               Notes owned by such Holder; provided, however, that neither
                                           --------  -------
               Holdings nor ICG shall be required to (i) qualify as a
               foreign corporation or as a dealer in securities in any
               jurisdiction where it would not otherwise be required to
               qualify but for this Section 3(d), (ii) file any general
               consent to service of process or (iii) subject itself to
               taxation in any such jurisdiction if it is not otherwise so
               subject;

                    (e)  in the case of a Shelf Registration, notify each
               Holder of Registrable Notes, counsel for the Holders and
               counsel for the Placement Agent promptly and, if requested
               by any such Holder or counsel, confirm such advice in
               writing (i) when a Registration Statement has become
               effective and when any post-effective amendment thereto has
               been filed and becomes effective, (ii) of any request by the
               SEC or any state securities authority for amendments and
               supplements to a Registration Statement and Prospectus or
               for additional information after the Registration Statement
               has become effective, (iii) of the issuance by the SEC or
               any state securities authority of any stop order suspending
               the effectiveness of a Registration Statement or the
               initiation of any proceedings for that purpose, (iv) if,
               between the effective date of a Registration Statement and
               the closing of any sale of Registrable Notes covered
               thereby, the representations and warranties of Holdings and
               ICG contained in any underwriting agreement, securities
               sales agreement or other similar agreement, if any, relating
               to the offering cease to be true and correct in all material
               respects or if Holdings and ICG receive any notification
               with respect to the suspension of the qualification of the
               Registrable Notes for sale in any jurisdiction or the
               initiation of any proceeding for such purpose, (v) of the
               happening of any event during the period a Shelf
               Registration Statement is effective which makes any
               statement made in such Registration Statement or the related
               Prospectus untrue in any material respect or which requires
               the making of any changes in such Registration Statement or
               Prospectus in order to make the statements therein not
               misleading and (vi) of any determination by Holdings and ICG
               that a post-effective amendment to a Registration Statement
               would be appropriate;

                    (f)  make every reasonable effort to obtain the
               withdrawal of any order suspending the effectiveness of a
               Registration Statement at the earliest possible moment and
               provide immediate notice to each Holder of the withdrawal of
               any such order;

                    (g)  in the case of a Shelf Registration, furnish to
               each Holder of Registrable Notes, without charge, at least
               one conformed copy of each Registration Statement and any
               post-effective amendment thereto (without documents
               incorporated therein by reference or exhibits thereto,
               unless requested);

                    (h)  in the case of a Shelf Registration, cooperate
               with the selling Holders of Registrable Notes to facilitate
               the timely preparation and delivery of certificates
               representing Registrable Notes to be sold and not bearing
               any restrictive legends and enable such Registrable Notes to
               be in such denominations (consistent with the provisions of
               the Indenture) and registered in such names as the selling
               Holders may reasonably request at least two business days
               prior to the closing of any sale of Registrable Notes;

                    (i)  in the case of a Shelf Registration, upon the
               occurrence of any event contemplated by Section 3(e)(v)
               hereof, use their best efforts to prepare a supplement or
               post-effective amendment to a Registration Statement or the
               related Prospectus or any document incorporated therein by
               reference or file any other required document so that, as
               thereafter delivered to the purchasers of the Registrable
               Notes, such Prospectus will not contain any untrue statement
               of a material fact or omit to state a material fact
               necessary to make the statements therein, in light of the
               circumstances under which they were made, not misleading. 
               Holdings and ICG agree to notify the Holders to suspend use
               of the Prospectus as promptly as practicable after the
               occurrence of such an event, and the Holders hereby agree to
               suspend use of the Prospectus until Holdings and ICG have
               amended or supplemented the Prospectus to correct such
               misstatement or omission;

                    (j)  within a reasonable time prior to the filing of
               any Registration Statement, any Prospectus, any amendment to
               a Registration Statement or amendment or supplement to a
               Prospectus or any document which is to be incorporated by
               reference into a Registration Statement or a Prospectus
               after initial filing of a Registration Statement, provide
               copies of such document to the Placement Agent and its
               counsel (and, in the case of a Shelf Registration Statement,
               the Holders and their counsel) and make such representatives
               of Holdings and ICG as shall be reasonably requested by the
               Placement Agent or its counsel (and, in the case of a Shelf
               Registration Statement, the Holders or their counsel)
               available for discussion of such document, and shall not at
               any time file or make any amendment to the Registration
               Statement, any Prospectus or any amendment of or supplement
               to a Registration Statement or a Prospectus or any document
               which is to be incorporated by reference into a Registration
               Statement or a Prospectus, of which the Placement Agent and
               its counsel (and, in the case of a Shelf Registration
               Statement, the Holders and their counsel) shall not have
               previously been advised and furnished a copy or to which the
               Placement Agent or its counsel (and, in the case of a Shelf
               Registration Statement, the Holders or their counsel) shall
               object, except for any amendment or supplement or document
               (a copy of which has been previously furnished to the
               Placement Agent and its counsel (and, in the case of a Shelf
               Registration Statement, the Holders and their counsel))
               which counsel to Holdings and ICG shall advise Holdings and
               ICG, in the form of a written legal opinion, is required in
               order to comply with applicable law; the Placement Agent
               agrees that, if it receives timely notice and drafts under
               this clause (j), it will not take actions or make objections
               pursuant to this clause (j) such that Holdings and ICG are
               unable to comply with their obligations under Section 2(a);

                    (k)  obtain a CUSIP number and, if applicable, a CINS
               number, for all Exchange Notes or Registrable Notes, as the
               case may be, not later than the first effective date of a
               Registration Statement;

                    (l)  cause the Indenture to be qualified under the
               Trust Indenture Act of 1939, as amended (the "TIA"), in
               connection with the registration of the Exchange Notes or
               Registrable Notes, as the case may be, cooperate with the
               Trustee and the Holders to effect such changes to the
               Indenture as may be required for the Indenture to be so
               qualified in accordance with the terms of the TIA and
               execute, and use their best efforts to cause the Trustee to
               execute, all documents as may be required to effect such
               changes and all other forms and documents required to be
               filed with the SEC to enable the Indenture to be so
               qualified in a timely manner;

                    (m)  in the case of a Shelf Registration, make
               available for inspection by a representative of the Holders
               of the Registrable Notes, any Underwriter participating in
               any disposition pursuant to such Shelf Registration
               Statement, and attorneys and accountants designated by the
               Holders, at reasonable times and in a reasonable manner, all
               financial and other records, pertinent documents and
               properties of Holdings and ICG, and cause the respective
               officers, directors and employees of Holdings and ICG to
               supply all information reasonably requested by any such
               representative, Underwriter, attorney or accountant in
               connection with a Shelf Registration Statement;

                    (n)  in the case of a Shelf Registration, use their
               best efforts to cause all Registrable Notes to be listed on
               any securities exchange or any automated quotation system on
               which similar securities issued by Holdings and ICG are then
               listed if requested by the Majority Holders, to the extent
               such Registrable Notes satisfy applicable listing
               requirements;

                    (o)  use their best efforts to cause the Exchange Notes
               or Registrable Notes, as the case may be, to be rated by two
               nationally recognized statistical rating organizations (as
               such term is defined in Rule 436(g)(2) under the 1933 Act);

                    (p)  if reasonably requested by any Holder of
               Registrable Notes covered by a Registration Statement, (i)
               promptly incorporate in a Prospectus supplement or post-
               effective amendment such information with respect to such
               Holder as such Holder reasonably requests to be included
               therein and (ii) make all required filings of such
               Prospectus supplement or such post-effective amendment as
               soon as Holdings and ICG have received notification of the
               matters to be incorporated in such filing; and

                    (q)  in the case of a Shelf Registration, enter into
               such customary agreements and take all such other actions in
               connection therewith (including those requested by the
               Holders of a majority of the Registrable Notes being sold)
               in order to expedite or facilitate the disposition of such
               Registrable Notes including, but not limited to, an
               Underwritten Offering and in such connection, (i) to the
               extent possible, make such representations and warranties to
               the Holders and any Underwriters of such Registrable Notes
               with respect to the business of Holdings, ICG and their
               subsidiaries, the Registration Statement, Prospectus and
               documents incorporated by reference or deemed incorporated
               by reference, if any, in each case, in form, substance and
               scope as are customarily made by issuers to underwriters in
               underwritten offerings and confirm the same if and when
               requested, (ii) obtain opinions of counsel to Holdings and
               ICG (which counsel and opinions, in form, scope and
               substance, shall be reasonably satisfactory to the Holders
               and such Underwriters and their respective counsel)
               addressed to each selling Holder and Underwriter of
               Registrable Notes, covering the matters customarily covered
               in opinions requested in underwritten offerings,
               (iii) obtain "cold comfort" letters from the independent
               certified public accountants of Holdings and ICG (and, if
               applicable, any other certified public accountant of any
               business acquired by Holdings or ICG for which financial
               statements and financial data are or are required to be
               included in the Registration Statement) addressed to each
               selling Holder and Underwriter of Registrable Notes, such
               letters to be in customary form and covering matters of the
               type customarily covered in "cold comfort" letters in
               connection with underwritten offerings, and (iv) deliver
               such documents and certificates as may be reasonably
               requested by the Holders of a majority in principal amount
               of the Registrable Notes being sold or the Underwriters, and
               which are customarily delivered in underwritten offerings,
               to evidence the continued validity of the representations
               and warranties of Holdings and ICG made pursuant to clause
               (i) above and to evidence compliance with any customary
               conditions contained in an underwriting agreement. 

                    In the case of a Shelf Registration Statement, Holdings
          and ICG may require each Holder of Registrable Notes to furnish
          to Holdings and ICG such information regarding the Holder and the
          proposed distribution by such Holder of such Registrable Notes as
          Holdings and ICG may from time to time reasonably request in
          writing.  

                    In the case of a Shelf Registration Statement, each
          Holder agrees that, upon receipt of any notice from Holdings and
          ICG of the happening of any event of the kind described in
          Section 3(e)(v) hereof, such Holder will forthwith discontinue
          disposition of Registrable Notes pursuant to a Registration
          Statement until such Holder's receipt of the copies of the
          supplemented or amended Prospectus contemplated by Section 3(i)
          hereof, and, if so directed by Holdings and ICG, such Holder will
          deliver to Holdings and ICG (at its expense) all copies in its
          possession, other than permanent file copies then in such
          Holder's possession, of the Prospectus covering such Registrable
          Notes current at the time of receipt of such notice.  If Holdings
          and ICG shall give any such notice to suspend the disposition of
          Registrable Notes pursuant to a Registration Statement, Holdings
          and ICG shall extend the period during which the Registration
          Statement shall be maintained effective pursuant to this
          Agreement by the number of days during the period from and
          including the date of the giving of such notice to and including
          the date when the Holders shall have received copies of the
          supplemented or amended Prospectus necessary to resume such
          dispositions.

                    The Holders of Registrable Notes covered by a Shelf
          Registration Statement who desire to do so may sell such
          Registrable Notes in an Underwritten Offering.  In any such
          Underwritten Offering, the investment banker or investment
          bankers and manager or managers (the "Underwriters") that will
          administer the offering will be selected by the Majority Holders
          of the Registrable Notes included in such offering.

                    4.   Participation of Broker-Dealers in Exchange Offer.
                         -------------------------------------------------

                    (a)  The Staff of the SEC has taken the position that
          any broker-dealer that receives Exchange Notes for its own
          account in the Exchange Offer in exchange for Notes that were
          acquired by such broker-dealer as a result of market-making or
          other trading activities (a "Participating Broker-Dealer"), may
          be deemed to be an "underwriter" within the meaning of the 1933
          Act and must deliver a prospectus meeting the requirements of the
          1933 Act in connection with any resale of such Exchange Notes.

                    Holdings and ICG understand that it is the Staff's
          position that if the Prospectus contained in the Exchange Offer
          Registration Statement includes a plan of distribution containing
          a statement to the above effect and the means by which
          Participating Broker-Dealers may resell the Exchange Notes,
          without naming the Participating Broker-Dealers or specifying the
          amount of Exchange Notes owned by them, such Prospectus may be
          delivered by Participating Broker-Dealers to satisfy their
          prospectus delivery obligation under the 1933 Act in connection
          with resales of Exchange Notes for their own accounts, so long as
          the Prospectus otherwise meets the requirements of the 1933 Act.

                    (b)  In light of the above, notwithstanding the other
          provisions of this Agreement, Holdings and ICG agree that the
          provisions of this Agreement as they relate to a Shelf
          Registration shall also apply to an Exchange Offer Registration
          to the extent, and with such reasonable modifications thereto as
          may be, reasonably requested by the Placement Agent or by one or
          more Participating Broker-Dealers, in each case as provided in
          clause (ii) below, in order to expedite or facilitate the
          disposition of any Exchange Notes by Participating Broker-Dealers
          consistent with the positions of the Staff recited in
          Section 4(a) above; provided that:
                              --------

                    (i)  Holdings and ICG shall not be required to amend or
               supplement the Prospectus contained in the Exchange Offer
               Registration Statement, as would otherwise be contemplated
               by Section 3(i) of this Agreement, for a period exceeding 60
               days after the last Exchange Date (as such period may be
               extended pursuant to the penultimate paragraph of Section 3
               of this Agreement) and Participating Broker-Dealers shall
               not be authorized by Holdings and ICG to deliver and shall
               not deliver such Prospectus after such period in connection
               with the resales contemplated by this Section 4; and

                    (ii) the application of the Shelf Registration
               procedures set forth in Section 3 of this Agreement to an
               Exchange Offer Registration, to the extent not required by
               the positions of the Staff of the SEC or the 1933 Act and
               the rules and regulations thereunder, will be in conformity
               with the reasonable request to Holdings and ICG by the
               Placement Agent or with the reasonable request in writing to
               Holdings and ICG by one or more broker-dealers who certify
               to the Placement Agent, Holdings and ICG in writing that
               they anticipate that they will be Participating Broker-
               Dealers; and provided further that, in connection with such
                            -------- -------
               application of the Shelf Registration procedures set forth
               in Section 3 of this Agreement to an Exchange Offer
               Registration, Holdings and ICG shall be obligated (x) to
               deal only with one entity representing the Participating
               Broker-Dealers, which shall be the Placement Agent unless it
               elects not to act as such representative, (y) to pay the
               fees and expenses of only one counsel representing the
               Participating Broker-Dealers, which shall be counsel to the
               Placement Agent unless such counsel elects not to so act and
               (z) to cause to be delivered only one, if any, "cold
               comfort" letter with respect to the Prospectus in the form
               existing on the last Exchange Date and with respect to each
               subsequent amendment or supplement, if any, effected during
               the period specified in clause (i) above.

                    (c)  The Placement Agent shall have no liability to
          Holdings, ICG or any Holder with respect to any request that it
          may make pursuant to Section 4(b) above.

                    5.   Indemnification and Contribution.
                         --------------------------------

                    (a)  Each of Holdings and ICG agrees, jointly and
          severally, to indemnify and hold harmless the Placement Agent,
          each Holder and each Person, if any, who controls the Placement
          Agent or any Holder within the meaning of either Section 15 of
          the 1933 Act or Section 20 of the 1934 Act, or is under common
          control with, or is controlled by, the Placement Agent or any
          Holder, from and against all losses, claims, damages and
          liabilities (including, without limitation, any legal or other
          expenses reasonably incurred by the Placement Agent, any Holder
          or any such controlling or affiliated Person in connection with
          defending or investigating any such action or claim) caused by
          any untrue statement or alleged untrue statement of a material
          fact contained in any Registration Statement (or any amendment
          thereto) pursuant to which Exchange Notes or Registrable Notes
          were registered under the 1933 Act, including all documents
          incorporated therein by reference, or caused by any omission or
          alleged omission to state therein a material fact required to be
          stated therein or necessary to make the statements therein not
          misleading, or caused by any untrue statement or alleged untrue
          statement of a material fact contained in any Prospectus (as
          amended or supplemented if Holdings and ICG shall have furnished
          any amendments or supplements thereto), or caused by any omission
          or alleged omission to state therein a material fact necessary to
          make the statements therein in light of the circumstances under
          which they were made not misleading, except insofar as such
          losses, claims, damages or liabilities are caused by any such
          untrue statement or omission or alleged untrue statement or
          omission based upon information relating to the Placement Agent
          or any Holder furnished to Holdings and ICG in writing by the
          Placement Agent or any selling Holder expressly for use therein. 
          In connection with any Underwritten Offering permitted by Section
          3 of this Agreement, Holdings and ICG will also indemnify the
          Underwriters, if any, selling brokers, dealers and similar
          securities industry professionals participating in the
          distribution, their officers and directors and each Person who
          controls such Persons (within the meaning of the 1933 Act and the
          1934 Act) to the same extent as provided above with respect to
          the indemnification of the Holders, if requested in connection
          with any Registration Statement.

                    (b)  Each Holder agrees, severally and not jointly, to
          indemnify and hold harmless Holdings, ICG, the Placement Agent
          and the other selling Holders, and each of their respective
          directors, officers who sign the Registration Statement and each
          Person, if any, who controls Holdings, ICG, the Placement Agent
          and any other selling Holder within the meaning of either Section
          15 of the 1933 Act or Section 20 of the 1934 Act to the same
          extent as the foregoing indemnity from Holdings and ICG to the
          Placement Agent and the Holders, but only with reference to
          information relating to such Holder furnished to Holdings and ICG
          in writing by such Holder expressly for use in any Registration
          Statement (or any amendment thereto) or any Prospectus (or any
          amendment or supplement thereto).

                    (c)  In case any proceeding (including any governmental
          investigation) shall be instituted involving any Person in
          respect of which indemnity may be sought pursuant to either
          paragraph (a) or paragraph (b) above, such Person (the
          "indemnified party") shall promptly notify the Person against
          whom such indemnity may be sought (the "indemnifying party") in
          writing and the indemnifying party, upon request of the
          indemnified party, shall retain counsel reasonably satisfactory
          to the indemnified party to represent the indemnified party and
          any others the indemnifying party may designate in such
          proceeding and shall pay the fees and disbursements of such
          counsel related to such proceeding.  In any such proceeding, any
          indemnified party shall have the right to retain its own counsel,
          but the fees and expenses of such counsel shall be at the expense
          of such indemnified party unless (i) the indemnifying party and
          the indemnified party shall have mutually agreed to the retention
          of such counsel or (ii) the named parties to any such proceeding
          (including any impleaded parties) include both the indemnifying
          party and the indemnified party and representation of both
          parties by the same counsel would be inappropriate due to actual
          or potential differing interests between them.  It is understood
          that the indemnifying party shall not, in connection with any
          proceeding or related proceedings in the same jurisdiction, be
          liable for (a) the fees and expenses of more than one separate
          firm (in addition to any local counsel) for the Placement Agent
          and all Persons, if any, who control the Placement Agent within
          the meaning of either Section 15 of the 1933 Act or Section 20 of
          the 1934 Act, (b) the fees and expenses of more than one separate
          firm (in addition to any local counsel) for Holdings and ICG,
          their directors, their officers who sign the Registration
          Statement and each Person, if any, who controls Holdings or ICG
          within the meaning of either such Section and (c) the fees and
          expenses of more than one separate firm (in addition to any local
          counsel) for all Holders and all Persons, if any, who control any
          Holders within the meaning of either such Section, and that all
          such fees and expenses shall be reimbursed as they are incurred. 
          In such case involving the Placement Agent and Persons who
          control the Placement Agent, such firm shall be designated in
          writing by the Placement Agent.  In such case involving the
          Holders and such Persons who control Holders, such firm shall be
          designated in writing by the Majority Holders.  In all other
          cases, such firm shall be designated by ICG.  The indemnifying
          party shall not be liable for any settlement of any proceeding
          effected without its written consent but, if settled with such
          consent or if there be a final judgment for the plaintiff, the
          indemnifying party agrees to indemnify the indemnified party from
          and against any loss or liability by reason of such settlement or
          judgment.  Notwithstanding the foregoing sentence, if at any time
          an indemnified party shall have requested an indemnifying party
          to reimburse the indemnified party for fees and expenses of
          counsel as contemplated by the second and third sentences of this
          paragraph, the indemnifying party agrees that it shall be liable
          for any settlement of any proceeding effected without its written
          consent if (i) such settlement is entered into more than 30 days
          after receipt by such indemnifying party of the aforesaid request
          and (ii) such indemnifying party shall not have reimbursed the
          indemnified party for such fees and expenses of counsel in
          accordance with such request prior to the date of such
          settlement.  No indemnifying party shall, without the prior
          written consent of the indemnified party, effect any settlement
          of any pending or threatened proceeding in respect of which such
          indemnified party is or could have been a party and indemnity
          could have been sought hereunder by such indemnified party,
          unless such settlement includes an unconditional release of such
          indemnified party from all liability on claims that are the
          subject matter of such proceeding.

                    (d)  If the indemnification provided for in paragraph
          (a) or paragraph (b) of this Section 4 is unavailable to an
          indemnified party or insufficient in respect of any losses,
          claims, damages or liabilities, then each indemnifying party
          under such paragraph, in lieu of indemnifying such indemnified
          party thereunder, shall contribute to the amount paid or payable
          by such indemnified party as a result of such losses, claims,
          damages or liabilities in such proportion as is appropriate to
          reflect the relative fault of the indemnifying party or parties
          on the one hand and of the indemnified party or parties on the
          other hand in connection with the statements or omissions that
          resulted in such losses, claims, damages or liabilities, as well
          as any other relevant equitable considerations.  The relative
          fault of Holdings, ICG and the Holders shall be determined by
          reference to, among other things, whether the untrue or alleged
          untrue statement of a material fact or the omission or alleged
          omission to state a material fact relates to information supplied
          by Holdings and ICG or by the Holders and the parties' relative
          intent, knowledge, access to information and opportunity to
          correct or prevent such statement or omission.  The Holders'
          respective obligations to contribute pursuant to this Section
          5(d) are several in proportion to the respective principal amount
          of Registrable Notes of such Holder that were registered pursuant
          to a Registration Statement.  

                    (e)  Holdings, ICG and each Holder agree that it would
          not be just or equitable if contribution pursuant to this Section
          5 were determined by pro rata allocation or by any other method
                               --- ----
          of allocation that does not take account of the equitable
          considerations referred to in paragraph (d) above.  The amount
          paid or payable by an indemnified party as a result of the
          losses, claims, damages and liabilities referred to in paragraph
          (d) above shall be deemed to include, subject to the limitations
          set forth above, any legal or other expenses reasonably incurred
          by such indemnified party in connection with investigating or
          defending any such action or claim.  Notwithstanding the
          provisions of this Section 5, no Holder shall be required to
          contribute any amount in excess of the amount by which the total
          price at which Registrable Notes were sold by such Holder exceeds
          the amount of any damages that such Holder has otherwise been
          required to pay by reason of such untrue or alleged untrue
          statement or omission or alleged omission.  No Person guilty of
          fraudulent misrepresentation (within the meaning of Section 11(f)
          of the 1933 Act) shall be entitled to contribution from any
          Person who was not guilty of such fraudulent misrepresentation. 
          The remedies provided for in this Section 5 are not exclusive and
          shall not limit any rights or remedies which may otherwise be
          available to any indemnified party at law or in equity.

                    (f)  Survival.  The indemnity and contribution
                         --------
          provisions contained in this Section 5 shall remain operative and
          in full force and effect regardless of (i) any termination of
          this Agreement, (ii) any investigation made by or on behalf of
          the Placement Agent, any Holder or any person controlling the
          Placement Agent or any Holder, or by or on behalf of Holdings,
          ICG, their officers or directors or any Person controlling
          Holdings or ICG, (iii) acceptance of any of the Exchange Notes
          and (iv) any sale of Registrable Notes pursuant to a Shelf
          Registration Statement.

                    6.   Miscellaneous.
                         -------------

                    (a)  No Inconsistent Agreements.  Neither Holdings nor
                         --------------------------
          ICG has entered into, and on or after the date of this Agreement
          will not enter into, any agreement which is inconsistent with the
          rights granted to the Holders of Registrable Notes in this
          Agreement or otherwise conflicts with the provisions hereof.  The
          rights granted to the Holders hereunder do not in any way
          conflict with and are not inconsistent with the rights granted to
          the holders of Holdings' or ICG's other issued and outstanding
          securities under any such agreements.

                    (b)  Amendments and Waivers.  The provisions of this
                         ----------------------
          Agreement, including the provisions of this sentence, may not be
          amended, modified or supplemented, and waivers or consents to
          departures from the provisions hereof may not be given unless
          Holdings and ICG have obtained the written consent of Holders of
          at least a majority in aggregate principal amount of the
          outstanding Registrable Notes affected by such amendment,
          modification, supplement, waiver or consent; provided, however,
                                                       --------  -------
          that no amendment, modification, supplement, waiver or consents
          to any departure from the provisions of Section 5 hereof shall be
          effective as against any Holder of Registrable Notes unless
          consented to in writing by such Holder.

                    (c)  Notices.  All notices and other communications
                         -------
          provided for or permitted hereunder shall be made in writing by
          hand-delivery, registered first-class mail, telex, telecopier, or
          any courier guaranteeing overnight delivery (i) if to a Holder,
          at the most current address given by such Holder to Holdings and
          ICG by means of a notice given in accordance with the provisions
          of this Section 6(c), which address initially is, with respect to
          the Placement Agent, the address set forth in the Placement
          Agreement; (ii) if to Holdings, initially at Holdings' address
          set forth in the Indenture and thereafter at such other address,
          notice of which is given in accordance with the provisions of
          this Section 6(c); and if to ICG, initially at ICG's address set
          forth in the Indenture and thereafter at such other address,
          notice of which is given in accordance with the provisions of
          this Section 6(c).

                    All such notices and communications shall be deemed to
          have been duly given:  at the time delivered by hand, if
          personally delivered; five business days after being deposited in
          the mail, postage prepaid, if mailed; when answered back, if
          telexed; when receipt is acknowledged, if telecopied; and on the
          next business day if timely delivered to an air courier
          guaranteeing overnight delivery.

                    Copies of all such notices, demands, or other
          communications shall be concurrently delivered by the person
          giving the same to the Trustee, at the address specified in the
          Indenture.

                    (d)  Successors and Assigns.  This Agreement shall
                         ----------------------
          inure to the benefit of and be binding upon the successors,
          assigns and transferees of each of the parties, including,
          without limitation and without the need for an express
          assignment, subsequent Holders; provided that nothing herein
                                          --------
          shall be deemed to permit any assignment, transfer or other
          disposition of Registrable Notes in violation of the terms of the
          Placement Agreement.  If any transferee of any Holder shall
          acquire Registrable Notes, in any manner, whether by operation of
          law or otherwise, such Registrable Notes shall be held subject to
          all of the terms of this Agreement, and by taking and holding
          such Registrable Notes such person shall be conclusively deemed
          to have agreed to be bound by and to perform all of the terms and
          provisions of this Agreement and such person shall be entitled to
          receive the benefits hereof.  The Placement Agent (solely in its
          capacity as Placement Agent) shall have no liability or
          obligation to Holdings or ICG with respect to any failure by a
          Holder to comply with, or any breach by any Holder of, any of the
          obligations of such Holder under this Agreement.

                    (e)  Purchases and Sales of Notes.  Holdings and ICG
                         ----------------------------
          shall not, and shall use their best efforts to cause their
          affiliates (as defined in Rule 405 under the 1933 Act) not to,
          purchase and then resell or otherwise transfer any Notes.

                    (f)  Third Party Beneficiary.  The Holders shall be
                         -----------------------
          third party beneficiaries to the agreements made hereunder
          between Holdings and ICG, on the one hand, and the Placement
          Agent, on the other hand, and each Holder shall have the right to
          enforce such agreements directly to the extent it deems such
          enforcement necessary or advisable to protect its rights or the
          rights of Holders hereunder.

                    (g)  Counterparts.  This Agreement may be executed
                         ------------
          manually or by facsimile in any number of counterparts, each of
          which when so executed shall be deemed to be an original and all
          of which taken together shall constitute one and the same
          agreement.

                    (h)  Headings.  The headings in this Agreement are for
                         --------
          convenience of reference only and shall not limit or otherwise
          affect the meaning hereof.

                    (i)  Governing Law; Submission to Jurisdiction.  The
                         -----------------------------------------
          laws of the State of New York applicable to contracts to be
          performed entirely in that state shall govern this Agreement. 
          Each of ICG and Holdings agrees to submit to the jurisdiction of
          any federal or state court located in the City of New York in any
          suit, action or proceeding with respect to this Agreement and for
          actions brought under the U.S. federal or state securities laws
          brought in any such court.  

                    (j)  Severability.  In the event that any one or more
                         ------------
          of the provisions contained herein, or the application thereof in
          any circumstance, is held invalid, illegal or unenforceable, the
          validity, legality and enforceability of any such provision in
          every other respect and of the remaining provisions contained
          herein shall not be affected or impaired thereby.


          


                    IN WITNESS WHEREOF, the parties have executed this
          Agreement as of the date first written above.


                                       ICG HOLDINGS, INC.


                                       By /s/ James D. Grenfell
                                         ----------------------------------
                                         Name:  James D. Grenfell
                                         Title:  Executive Vice President,
                                                 Chief Financial Officer 
                                                 and Treasurer


                                       ICG COMMUNICATIONS, INC.


                                       By /s/ James D. Grenfell
                                         ---------------------------------
                                         Name:  James D. Grenfell
                                         Title:  Executive Vice President,
                                                 Chief Financial Officer
                                                 and Treasurer

          Confirmed and accepted as of
            the date first above written:

          MORGAN STANLEY & CO. 
             INCORPORATED


          By  /s/ James B. Avery
             ------------------------------
             Name:  James B. Avery
             Title:  Vice President