PARENT TREASURY STOCK OPTION AGREEMENT

           This PARENT TREASURY STOCK OPTION AGREEMENT dated as of
 February 17, 2000 is by and between CHAMPION INTERNATIONAL CORPORATION, a
 New York corporation ("Grantee"), and UPM-KYMMENE CORPORATION, a
 corporation organized under the laws of the Republic of Finland (the
 "Company").

                                   RECITALS

           WHEREAS, Grantee, the Company and Blue Acquisition, Inc. ("Merger
 Sub") propose to enter into an Agreement and Plan of Merger, dated as of
 the date hereof (the "Merger Agreement"), providing for, among other
 things, a merger (the "Merger") of Merger Sub with and into Grantee; and

           WHEREAS, as a condition and inducement to Grantee's willingness
 to enter into the Merger Agreement, Grantee has requested that the Company
 agree, and the Company has agreed, to grant Grantee the Option (as defined
 below).

           NOW, THEREFORE, in consideration of the foregoing and the
 respective representations, warranties, covenants and agreements set forth
 herein and in the Merger Agreement, the Company and Grantee agree as
 follows:

           1.   Capitalized Terms.  Certain capitalized terms used in this
 Agreement are defined in Annex A hereto and are used herein with the
 meanings therein ascribed.  Those capitalized terms used but not defined
 herein (including in Annex A hereto) that are defined in the Merger
 Agreement are used herein with the same meanings as ascribed to them
 therein; provided, however, that, as used in this Agreement, "Person" shall
 have the meaning specified in Sections 3(a)(9) and 13(d)(3) of the Exchange
 Act.

           2.   The Option.

           (a)  Grant of Option.  Subject to the terms and conditions set
 forth herein and in the Merger Agreement, the Company hereby grants to
 Grantee an irrevocable option (the "Option") to purchase up to 7,538,000
 ordinary shares (as adjusted as set forth herein) of the Company (the
 "Option Shares") no nominal value (the "Shares"), held by the Company in its
 treasury (being 2.82% of the number of shares outstanding on February 14,
 2000 before such issuance), at the Exercise Price (as defined below).

           (b)  Exercise Price.  The exercise price, as adjusted as set
 forth herein (the "Exercise Price") of the Option shall be equal to the
 closing sales price of the Shares on the HSE on the Notice Date (as defined
 in Section 2(d)(ii)).

           (c)  Term.  The Option shall be exercisable at any time and from
 time to time following the occurrence of an Exercise Event and shall remain
 in full force and effect until the earliest to occur of (i) the Effective
 Time, (ii) six months after the first occurrence of an Exercise Event  (or
 if, at the expiration of such six months after the first occurrence of an
 Exercise Event, the Option cannot be exercised by reason of any applicable
 Order, Law or Regulation, 10 business days after such impediment to
 exercise shall have been removed, but in no event under this clause (ii)
 later than the first anniversary of the Exercise Event), (iii) the receipt
 by the Company of Grantee's consent to the Company's sale of the Option
 Shares pursuant to Section 6.21 of the Merger Agreement, (iv) the Company
 receiving the required approval of its shareholders of the Parent Stock
 Option Agreement, (v) termination of the Merger Agreement in accordance
 with its terms other than a termination with respect to which an Exercise
 Event shall occur and (vi) the date on which Grantee shall have received
 the Profit Cap pursuant to Section 5 (the "Option Term").  If the Option is
 not theretofore exercised, the rights and obligations set forth in this
 Agreement shall terminate at the expiration of the Option Term.  "Exercise
 Event" shall mean (A) any of the events giving rise to the obligation of
 the Company to pay the Termination Fee under Section 9.3 of the Merger
 Agreement, (B) termination of the Merger Agreement by Grantee under Section
 9.1(c)(iii) and (C) termination of the Merger Agreement by Grantee or the
 Company under Section 9.1(d)(iii) and a Takeover Proposal has been made and
 publicly announced or communicated to the Company's shareholders after the
 date of this Agreement and prior to the Parent Shareholder Meeting.

           (d)  Exercise of Option.

                (i)  Grantee may exercise the Option, in whole or in part,
           at any time and from time to time following the occurence of an
           Exercise Event during the Option Term.  Notwithstanding the
           expiration of the Option Term, Grantee shall be entitled to
           purchase those Option Shares with respect to which it has
           exercised the Option in accordance with the terms hereof prior to
           the expiration of the Option Term.

                (ii) If Grantee wishes to exercise the Option, it shall send
           a written notice (an "Exercise Notice") (the date of which being
           herein referred to as the "Notice Date") to the Company no later
           than 2:00 p.m. (Helsinki time) specifying the total number of
           Option Shares it intends to purchase pursuant to such exercise;
           provided that the issuance of Option Shares pursuant to such
           Exercise Notice shall only be completed if (A) such purchase
           would not otherwise violate or cause the violation of applicable
           Law (including the Hart-Scott-Rodino Antitrust Improvements Act
           of 1976), (B) no Law or Regulation shall have been adopted or
           promulgated, and no Order shall be in effect, which prohibits
           delivery of such Option Shares (and the parties shall use their
           reasonable best efforts to have any such Order vacated or
           reversed), and (C) any prior notification to or approval of any
           other regulatory authority in the United States or elsewhere
           required in connection with such purchase shall have been made or
           obtained, other than those which if not made or obtained would
           not reasonably be expected to result in a significant detriment
           to the Company and its Subsidiaries taken as a whole.

                (iii) The delivery of, and payment for, the Option
           Shares to be purchased pursuant to an Exercise Notice delivered
           in accordance with Section 2(d)(ii) shall, to the extent
           reasonably possible pursuant to the rules and regulations of the
           HSE, be completed as a stock exchange trade using the settlement
           system of the HSE and shall be completed (the "Closing") on the
           third trading date of the HSE following the Notice Date or on
           such other date which shall be the settlement date in the
           settlement system of the HSE when the Notice Date is deemed to be
           the trade date (the "Closing Date").  In order to facilitate the
           completion of such delivery of, and payment for, the Option
           Shares as stock exchange trades, each party will use the services
           of a Finland based securities broker in effecting such trades.

                (iv) In the event the delivery of, and payment for, the
           Option Shares in respect of which an Exercise Notice has been
           given pursuant to subparagraph (ii) above cannot be completed in
           accordance with subparagraph (iii) above, the Closing Date for
           such delivery of, and payment for, the Option Shares shall be
           specified in such Exercise Notice or shall otherwise be specified
           by Grantee in writing and shall be a date nor earlier than three
           Business Days nor later than 15 Business Days from the Notice
           Date.  In such case:

                     (x)  On each Closing Date, Grantee shall pay to the
                Company in immediately available funds by wire transfer to a
                bank account designated by the Company an amount equal to
                the Exercise Price multiplied by the number of Option Shares
                to be purchased on such Closing Date.

                     (y)  On each Closing Date, simultaneously with the
                delivery of immediately available funds as provided above,
                the Company shall deliver to Grantee, in Grantee's book-
                entry account in the Finnish Book-entry Securities System,
                such number of Shares representing the Option Shares to be
                purchased at such Closing, which Option Shares shall be duly
                authorized, validly issued, fully paid and nonassessable and
                free and clear of all Liens, and Grantee shall deliver to
                the Company its written agreement that Grantee will not
                offer to sell or otherwise dispose of such Option Shares in
                violation of applicable Law or the provisions of this
                Agreement.

                (v)  If the Closing cannot be effected by reason of a
           restriction set forth in Clause (A), (B) or (C) of the proviso in
           Section 2(d)(ii), the Closing Date shall be extended to the tenth
           Business Day following the expiration or termination of such
           restriction.  Without limiting the foregoing, if prior
           notification to, or Authorization of, any Governmental Entity is
           required in connection with the purchase of such Option Shares by
           virtue of the application of such Law, Regulation or Order,
           Grantee and, if applicable, the Company shall promptly file the
           required notice or application for Authorization and Grantee,
           with the cooperation of the Company, shall expeditiously process
           the same.

                (vi) Notwithstanding Section 2(d)(v), if the Closing Date
           shall not have occurred by the first anniversary of the first
           occurrence of an Exercise Event as a result of one or more
           restrictions imposed by the application of any Law, Regulation or
           Order, the exercise of the Option effected on the Notice Date
           shall be deemed to have expired.

           3.   Adjustment Upon Changes in Capitalization, Etc.

           (a)  In the event of any change in the Shares by reason of stock
 dividend, stock split, split-up, combination, reclassification,
 recapitalization, exchange of shares, dividend, dividend payable in any
 other securities or similar event, the type and number of Shares or
 securities subject to the Option shall be adjusted appropriately, and
 proper provision shall be made in the agreements governing such
 transaction, so that Grantee shall receive upon exercise of the Option the
 same class and number of outstanding shares or other securities or property
 that Grantee would have received in respect of the Shares if the Option had
 been exercised immediately prior to such event, or the record date
 therefor, as applicable.

           (b)  Without limiting the parties' relative rights and
 obligations under the Merger Agreement, in the event that the Company
 enters into an agreement (i) to consolidate with or merge into any person,
 other than Grantee or one of its Subsidiaries, and the Company will not be
 the continuing or surviving corporation in such consolidation or merger,
 (ii) to permit any Person, other than Grantee or one of its Subsidiaries,
 to merge into the Company and the Company will be the continuing or
 surviving corporation, but in connection with such merger, the ordinary
 shares of the Company outstanding immediately prior to the consummation of
 such merger will be changed into or exchanged for stock or other securities
 of the Company or any other Person or cash or any other property, or (iii)
 to sell or otherwise transfer all or substantially all of its assets to any
 Person, other than Grantee or one of its Subsidiaries, then, and in each
 such case, the agreement governing such transaction will make proper
 provision so that the Option will, upon the consummation of any such
 transaction and upon the terms and conditions set forth herein, be
 converted into, or exchanged for, an option with identical terms
 appropriately adjusted to acquire the number and class of shares or other
 securities or property that Grantee would have received in respect of
 Option Shares had the Option been exercised immediately prior to such
 consolidation, merger, sale or transfer or the record date therefor, as
 applicable.  The Company shall take such steps in connection with such
 consolidation, merger, liquidation or other such transaction as may be
 reasonably necessary to assure that the provisions hereof shall thereafter
 apply as nearly as possible to any securities or property thereafter
 deliverable upon exercise of the Option.

           4.   Purchase Not For Distribution.  Grantee hereby represents
 and warrants to the Company that any Option Shares or other securities
 acquired by Grantee upon exercise of the Option will not be taken with a
 view to the public distribution thereof and will not be transferred or
 otherwise disposed of except in a transaction registered or exempt from
 registration under the Securities Act.

           5.   Profit Limitation.

           (a)  Notwithstanding any other provision of this Agreement in no
 event shall Grantee's Total Profit exceed the Profit Cap and, if it
 otherwise would exceed such amount, Grantee, at its sole election, shall
 either (i) pay cash or other consideration to the Company, (ii) reduce the
 number of Shares subject to the Option or (iii) undertake any combination
 thereof, so that Grantee's Total Profit shall not exceed the Profit Cap
 after taking into account the foregoing actions.

           (b)  Notwithstanding any other provision of this Agreement, this
 Stock Option may not be exercised for a number of Option Shares that would,
 as of any Notice Date, result in a Notional Total Profit of more than the
 Profit Cap, and, if exercise of the Option otherwise would exceed the
 Profit Cap, Grantee, at its sole option, may (in addition to the actions
 specified in Section 5(a)) (i) reduce the number of Option Shares subject
 to the Option or (ii) increase the Exercise Price for that number of Option
 Shares set forth in the Exercise Notice so that the Notional Total Profit
 shall not exceed the Profit Cap; provided, however, that nothing in this
 sentence shall restrict any exercise of the Option otherwise permitted by
 this Section 5(b) on any subsequent date at the Exercise Price set forth in
 Section 2(b) if such exercise would not then be restricted under this
 Section 5(b).

           (c)  Notwithstanding any other provision of this Agreement,
 nothing in this Agreement shall affect the ability of Grantee to receive,
 nor relieve the Company's obligation to pay, any Termination Fee provided
 for in Section 9.3 of the Merger Agreement; provided that if and to the
 extent the Total Profit received by Grantee would exceed the Profit Cap
 following receipt of such payment, Grantee shall be obligated to promptly
 comply with the terms of Section 5(a).

           (d)  For purposes of Section 5(a) and clause (ii) of the
 definition of Total Profit, the value of any Option Shares delivered by
 Grantee to the Company shall be the Applicable Price of such Option Shares.

           6.   Additional Covenants of the Company.

           (a)  If the Shares or any other securities then subject to the
 Option are then listed on the HSE, the Company, upon the occurrence of an
 Exercise Event, will promptly file an application to list on the HSE the
 Shares or other securities then subject to the Option, following the due
 issuance thereof and will use all reasonable efforts to cause such listing
 application to be approved as promptly as practicable.

           (b)  The Company will use its reasonable best efforts to take, or
 cause to be taken, all actions and to do, or cause to be done, all things
 necessary, proper or advisable under applicable laws and regulations to
 permit the exercise of the Option in accordance with the terms and
 conditions hereof, as soon as practicable after the date hereof, including
 making any appropriate filing pursuant to the HSR Act and any other
 applicable law, supplying as promptly as practicable any additional
 information and documentary material that may be requested pursuant to the
 HSR Act and any other applicable law, and taking all other actions
 necessary to cause the expiration or termination of the applicable waiting
 periods under the HSR Act as soon as practicable.

           (c)  The Company agrees not to avoid or seek to avoid (whether by
 charter amendment or through reorganization, consolidation, merger,
 issuance of rights, dissolution or sale of assets, or by any other
 voluntary act) the observance or performance of any of the covenants,
 agreements or conditions to be observed or performed hereunder by it.

           (d)  Upon receipt by the Company of evidence reasonably
 satisfactory to it of the loss, theft, destruction or mutilation of this
 Agreement, and (in the case of loss, theft or destruction) of reasonably
 satisfactory indemnification, and upon surrender and cancellation of this
 Agreement, if mutilated, the Company will execute and deliver a new
 Agreement of like tenor and date.

           (e)  The Company agrees that, during the Option Term, it shall
 not sell any of the Option Shares except to Grantee upon exercise of the
 Option or upon receipt of the consent of Grantee pursuant to Section 6.21
 of the Merger Agreement.

           7.   Miscellaneous.

           (a)  Expenses.  Except as otherwise provided in the Merger
 Agreement or as otherwise expressly provided herein, each of the parties
 hereto shall bear and pay all costs and expenses incurred by it or on its
 behalf in connection with the transactions contemplated hereunder,
 including fees and expenses of its own financial consultants, investment
 bankers, accountants and counsel.  Grantee shall be liable for any stamp
 duties, transfer taxes or any similar taxes or duties payable in connection
 with the transfer and purchase of Option Shares pursuant to this Agreement.

           (b)  Waiver and Amendment.  Any provision of this Agreement may
 be waived at any time by the party that is entitled to the benefits of such
 provision.  This Agreement may not be modified, amended, altered or
 supplemented except upon the execution and delivery of a written agreement
 executed by the parties hereto.

           (c)  Entire Agreement; No Third Party Beneficiary.  Except as
 otherwise set forth in the Merger Agreement, this Agreement (including the
 Merger Agreement and the other documents and instruments referred to herein
 and therein) (i) constitutes the entire agreement and supersedes all prior
 agreements and understandings, both written and oral, between the parties
 with respect to the subject matter hereof and (ii) is not intended to
 confer upon any Person other than the parties hereto any rights or remedies
 hereunder.

           (d)  Severability.  If any term or other provision of this
 Agreement is invalid, illegal or incapable of being enforced by any rule of
 law or public policy, all other conditions and provisions of this Agreement
 shall nevertheless remain in full force and effect so long as the economic
 or legal substance of the transactions contemplated hereby is not affected
 in any manner materially adverse to any party.  Upon such determination
 that any term or other provision is invalid, illegal or incapable of being
 enforced, the parties hereto shall negotiate in good faith to modify this
 Agreement so as to effect the original intent of the parties as closely as
 possible in an acceptable manner to the end that transactions contemplated
 hereby are fulfilled to the extent possible.

           (e)  Governing Law.  This Agreement shall be governed by, and
 construed in accordance with, the Laws of the State of New York, regardless
 of the Laws that might otherwise govern under applicable principles of
 conflicts of law.

           (f)  Descriptive Headings.  The descriptive headings contained
 herein are for convenience of reference only and shall not affect in any
 way the meaning or interpretation of this Agreement.

           (g)  Notices.  All notices and other communications hereunder
 shall be in writing and shall be deemed given if delivered personally,
 telecopied (with confirmation) or mailed by registered or certified mail
 (return receipt requested) to the parties at the following addresses or
 sent by electronic transmission to the telecopier number specified below:

                If to Grantee to:

                Champion International Corporation
                One Champion Plaza
                Stamford, Connecticut 06921
                Telecopy:  (203) 358-6562
                Attention:  General Counsel

                with a copy to:

                Skadden, Arps, Slate, Meagher & Flom LLP
                Four Times Square
                New York, New York 10036
                Telecopy:  (212) 735-2000
                Attention:  Blaine V. Fogg, Esq.
                            Joseph A. Coco, Esq.

                If to the Company to:

                UPM-Kymmene Corporation
                Etelaesplanadi 2
                P.O. Box 380
                FIN-00101 Helsinki
                Telecopy:  011-358-204-150-304
                Attention:  Reko Aalto-Setala

                with a copy to:

                White & Case LLP
                1155 Avenue of the Americas
                New York, New York 10036
                Telecopy: (212) 354-8113
                Attention: Timothy B. Goodell, Esq.

           (h)  Counterparts.  This Agreement and any amendments hereto may
 be executed in counterparts, each of which shall be deemed an original and
 all of which taken together shall constitute but a single document.

           (i)  Assignment.  Neither this Agreement nor any of the rights,
 interests or obligations hereunder or under the Option shall be sold,
 assigned or otherwise disposed of or transferred by either of the parties
 hereto (whether by operation of law or otherwise) without the prior written
 consent of the other party, except that Grantee may assign this Agreement
 to a wholly owned Subsidiary of Grantee; provided, however, that no such
 assignment shall have the effect of releasing Grantee from its obligations
 hereunder.  Subject to the preceding sentence, this Agreement shall be
 binding upon, inure to the benefit of and be enforceable by the parties and
 their respective successors and assigns.

           (j)  Further Assurances.  In the event of any exercise of the
 Option by Grantee, the Company and Grantee shall execute and deliver all
 other documents and instruments and take all other action that may be
 reasonably necessary in order to consummate the transactions provided for
 by such exercise.

           (k)  Specific Performance.  The parties hereto hereby acknowledge
 and agree that the failure of any party to this Agreement to perform its
 agreements and covenants hereunder will cause irreparable injury to the
 other party to this Agreement for which damages, even if available, will
 not be an adequate remedy.  Accordingly, each of the parties hereto hereby
 consents to the granting of equitable relief (including specific
 performance and injunctive relief) by any court of competent jurisdiction
 to enforce any party's obligations hereunder.  The parties further agree to
 waive any requirement for the securing or posting of any bond in connection
 with the obtaining of any such equitable relief and that this provision is
 without prejudice to any other rights that the parties hereto may have for
 any failure to perform this Agreement.


           IN WITNESS WHEREOF, the Company and Grantee have caused this
 Parent Treasury Stock Option Agreement to be signed by their respective
 officers thereunto duly authorized, all as of the day and year first
 written above.

                          CHAMPION INTERNATIONAL CORPORATION


                          By:  /s/ Richard R. Olson
                             ------------------------------------------
                          Name:   Richard R. Olson
                          Title:  Chairman and Chief Executive Officer


                          UPM-KYMMENE CORPORATION


                          By:  /s/ Juha Niemela
                             ------------------------------------------
                          Name:  Juha Niemela
                          Title:  President and Chief Executive Officer


                          By:  /s/ Reko Aalto-Setala
                             ------------------------------------------
                          Name:  Reko Aalto-Setala
                          Title:  General Counsel



                                                                    Annex A



                         SCHEDULE OF DEFINED TERMS

           The following terms when used in the Parent Treasury Stock Option
 Agreement shall have the meanings set forth below unless the context shall
 otherwise require:

           "Agreement" shall mean this Parent Treasury Stock Option
 Agreement.

           "Applicable Price", as of any date, means the highest of (i) the
 highest purchase price per Share paid or proposed to be paid by any third
 Person for Shares pursuant to any Takeover Proposal for or with the Company
 made on or prior to such date and (ii) the Current Market Price.  If the
 consideration to be offered, paid or received pursuant to the foregoing
 clause (i) shall be other than in cash, the value of such consideration
 shall be determined in good faith by an independent nationally recognized
 investment banking firm jointly selected by Grantee and the Company.

           "Authorization" shall mean any and all permits, licenses,
 authorizations, orders certificates, registrations or other approvals
 granted by any Governmental Entity.

           "Beneficial Ownership," "Beneficial Owner" and "Beneficially Own"
 shall have the meanings ascribed to them in Rule 13d-3 under the Exchange
 Act.

           "Business Day" shall mean a day other than Saturday, Sunday or a
 federal holiday in the United States or Helsinki, Finland.

           "Closing" shall have the meaning ascribed to such term in Section
 2 herein.

           "Closing Date" shall have the meaning ascribed to such term in
 Section 2 herein.

           "Current Market Price" shall mean, as of any date, the average of
 the closing prices (or, if such securities should not trade on any trading
 day, the average of the bid and asked prices therefor on such day) of the
 Shares as reported on the HSE during the ten consecutive trading days
 ending on (and including) the trading day immediately prior to such date
 or, if the Shares are not quoted thereon, on the principal trading market
 (as defined in Regulation M under the Exchange Act) on which such shares
 are traded as reported by a recognized source during such ten trading day
 period.

           "Exercise Event" shall have the meaning ascribed to such term in
 Section 2(c) herein.

           "Exercise Notice" shall have the meaning ascribed to such term in
 Section 2(d) herein.

           "Exercise Price" shall have the meaning ascribed to such term in
 Section 2(b) herein.

           "Governmental Entity" shall mean any federal, state or foreign
 governmental or regulatory agency, body or authority.

           "Law" shall mean all laws, statutes and ordinances of the United
 States, any state of the United States, any foreign country, any foreign
 state and any political subdivision thereof, including all decisions of
 Governmental Entities having the effect of law in each such jurisdiction.

           "Notice Date" shall have the meaning ascribed to such term in
 Section 2 herein.

           "Notional Total Profit" shall mean, with respect to any number of
 Option Shares as to which Grantee may propose to exercise the Option, the
 Total Profit determined as of the date of the Exercise Notice assuming that
 the Option were exercised on such date for such number of Option Shares and
 assuming that such Option Shares, together with all other Option Shares
 previously acquired upon exercise of the Option and held by Grantee as of
 such date, were sold for cash at the closing market price per Share as of
 the close of business on the preceding trading day (less customary
 brokerage commissions).

           "Option" shall have the meaning ascribed to such term in Section
 2 herein.

           "Option Shares" shall have the meaning ascribed to such term in
 Section 2 herein.

           "Option Term" shall have the meaning ascribed to such term in
 Section 2 herein.

           "Order" shall mean any judgment, order or decree of any
 Governmental Entity.

           "Parent Stock Option Agreement" shall mean the Parent Stock
 Option Agreement dated as of February 17, 2000 by and between Grantee and
 the Company.

           "Profit Cap" shall mean $210 million.

           "Regulation" shall mean any rule or regulation of any
 Governmental Entity having the effect of Law or of any rule or regulation
 of any self-regulatory organization, such as the NYSE and the HSE.

           "Total Profit" shall mean (i) the aggregate amount (before income
 taxes) of (A) any excess of (x) the net cash amounts plus the fair market
 value of any other consideration (net of expenses incurred) received by
 Grantee pursuant to a sale of the Option Shares (or securities into which
 such shares are converted or exchanged) over (y) Grantee's aggregate
 purchase price for such Option Shares (or other securities) plus (B) any
 amounts received by Grantee from the Company or concurrently being paid to
 Grantee pursuant to Section 9.3 of the Merger Agreement minus (ii) the
 amounts of any cash previously paid by Grantee to the Company pursuant to
 Section 5 of this Agreement.

           "Unexercised Option Shares" shall mean, from and after the
 Exercise Date until the expiration of the Option Term, those Option Shares
 as to which the Option remains unexercised from time to time.