Exhibit 10


                        FIRST AMENDMENT TO THIRD AMENDED
                          AND RESTATED CREDIT AGREEMENT

     This First Amendment to Third Amended and Restated  Credit  Agreement (this
"FIRST  AMENDMENT") is entered into effective as of the 30th day of April,  2003
(the  "EFFECTIVE  DATE"),  by and  among  Denbury  Resources  Inc.,  a  Delaware
corporation ("BORROWER"), Bank One, NA, as Administrative Agent ("ADMINISTRATIVE
AGENT"),  and the financial  institutions  parties  hereto as Banks  ("EXECUTING
BANKS").

                               W I T N E S S E T H

     WHEREAS,  Borrower,  Administrative Agent, the other agents a party thereto
and  Banks are  parties  to that  certain  Third  Amended  and  Restated  Credit
Agreement  dated as of  September  12,  2002 (the  "CREDIT  AGREEMENT")  (unless
otherwise  defined  herein,  all terms used  herein  with their  initial  letter
capitalized  shall have the meaning  given such terms in the Credit  Agreement);
and

     WHEREAS, pursuant to the Credit Agreement, Banks have made a Revolving Loan
to Borrower and provided certain other credit accommodations to Borrower; and

     WHEREAS,  Borrower has requested  that Banks (a) amend certain terms of the
Credit Agreement in certain respects,  (b) consent to certain  transactions more
particularly  described herein,  and (c) reaffirm and establish a Borrowing Base
and  Conforming  Borrowing Base of  $220,000,000  to be effective as of April 1,
2003 and continuing until the first Redetermination thereafter; and

     WHEREAS,  subject to and upon the terms and  conditions  set forth  herein,
Executing Banks have agreed to Borrower's requests.

     NOW  THEREFORE,  for  and in  consideration  of the  mutual  covenants  and
agreements  herein  contained  and other good and  valuable  consideration,  the
receipt  and  sufficiency  of  which  are  hereby  acknowledged  and  confessed,
Borrower, Administrative Agent and each Executing Bank hereby agree as follows:

SECTION 1. AMENDMENTS. In reliance on the representations, warranties, covenants
and  agreements   contained  in  this  First  Amendment,   and  subject  to  the
satisfaction  of the  conditions  precedent  set forth in Section 4 hereof,  the
Credit  Agreement  shall be amended  effective as of the  Effective  Date in the
manner provided in this Section 1.

     1.1 ADDITIONAL  DEFINITIONS.  Section 2.1 of the Credit  Agreement shall be
amended  to  add  thereto  in  alphabetical   order  the  definitions  of  "BOND
DISBURSEMENT,"  "BOND  DOCUMENTS,"  "BOND  EXPOSURE,"  "BOND  INDENTURE,"  "BOND
ISSUER," "BOND LOAN  AGREEMENT,"  "BOND NOTE," "BOND  OFFERING,"  "BOND PURCHASE
AGREEMENT,"  "BOND  PURCHASER,"  "BOND TRUSTEE,"  "BONDS" and "FIRST  AMENDMENT"
which shall read in full as follows:




          "BOND  DISBURSEMENT"  means an advance of proceeds of the Bonds by the
     Bond Purchaser to the Bond Trustee pursuant to the Bond Documents.

          "BOND  DOCUMENTS"  means,  collectively,  the  Bonds,  the  Bond  Loan
     Agreement,  the Bond Note, the Bond Purchase Agreement,  the Bond Indenture
     and all  other  agreements,  documents  and  instruments  now or  hereafter
     executed  and/or  delivered  by,  between or among any Credit  Party,  Bond
     Issuer,  Bond Trustee and/or Bond Purchaser pursuant to the Bonds, the Bond
     Loan  Agreement,  the  Bond  Purchase  Agreement,  the  Bond  Indenture  or
     otherwise in connection with the Bond Offering,  each of which  agreements,
     documents  and  instruments  shall be in form and  substance  acceptable to
     Administrative Agent in its sole discretion.

          "BOND EXPOSURE" means, at any time, without duplication, the aggregate
     amount of proceeds  of the Bonds which have not been  advanced at such time
     by the Bond  Purchaser.  The Bond Exposure of any Bank at any time shall be
     its Commitment Percentage of the total Bond Exposure at such time.

          "BOND  INDENTURE"  means that  certain  Indenture,  dated as of May 1,
     2003, between Bond Issuer and Bond Trustee.

          "BOND ISSUER" means Mississippi Business Finance Corporation, a public
     corporation  organized  and  existing  under  the  laws  of  the  State  of
     Mississippi.

          "BOND LOAN AGREEMENT"  means that certain Loan Agreement,  dated as of
     May 1, 2003, by and between Bond Issuer and Borrower.

          "BOND NOTE" means that certain  promissory note of Borrower,  dated of
     even  date  with the Bond  Loan  Agreement,  payable  to the  order of Bond
     Issuer, which promissory note shall be pledged and assigned to Bond Trustee
     to secure the  obligations  of Bond Issuer under the Bond Indenture and the
     Bonds.

          "BOND  OFFERING"  means the  issuance  and sale by Bond  Issuer of the
     Bonds to Bond  Purchaser,  the proceeds of which are to be  advanced,  from
     time to time, by Bond  Purchaser to Bond Trustee to fund the "Project Fund"
     as created under,  and defined in, the Bond  Indenture,  which Project Fund
     will be utilized to finance the Cost of the Project (as defined in the Bond
     Loan Agreement)  located in the State of Mississippi.  Upon the date of the
     issuance of the Bonds, Bond Purchaser shall be deemed to have

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     sold to each Bank,  and each Bank  shall be deemed to have  unconditionally
     and irrevocably purchased from Bond Purchaser, a participation in the Bonds
     and Bond Exposure equal to such Bank's Commitment  Percentage of such Bonds
     and Bond Exposure.

          "BOND PURCHASE  AGREEMENT" means that certain Bond Purchase Agreement,
     dated as of May 1, 2003, among Bond Purchaser, Bond Issuer and Borrower.

          "BOND  PURCHASER"  means  Administrative  Agent, as "Purchaser" of the
     Bonds under the Bond Purchase Agreement.

          "BOND TRUSTEE" means Bank One, NA, in its capacity as "Trustee"  under
     the Bond Indenture and not as Administrative Agent.

          "BONDS" means,  whether one or more, Bond Issuer's Taxable  Industrial
     Development  Revenue Bonds,  Series 2003 (Denbury  Resources Inc. Project),
     which  Bonds  shall  (a) be in a  maximum  aggregate  principal  amount  of
     $20,000,000, (b) bear interest at rates identical to the interest rates set
     forth in the Credit Agreement,  (c) have a maturity date of April 30, 2006,
     and (d) provide that Bond  Purchaser's  obligation  to make advances of the
     proceeds  thereof  shall  expire two (2) years from the date of issuance of
     such Bonds.

          "FIRST  AMENDMENT" means that certain First Amendment to Third Amended
     and Restated  Credit  Agreement  dated as of April 30, 2003 among Borrower,
     Administrative Agent and Banks.

     1.2  AMENDMENT  TO  DEFINITIONS.  The  definitions  of  "LOAN  PAPERS"  and
"PERMITTED  SUBORDINATE  DEBT" contained in Section 2.1 of the Credit  Agreement
shall be amended to read in full as follows:

          "LOAN PAPERS" means this Agreement,  the First  Amendment,  the Notes,
     each  Facility  Guaranty  which  may now or  hereafter  be  executed,  each
     Borrower  Pledge  Agreement  which may now or hereafter  be executed,  each
     Subsidiary  Pledge  Agreement  which may now or hereafter be executed,  the
     Existing  Mortgages  (as  amended  by the  Assignments  and  Amendments  to
     Mortgages),  all Mortgages now or at any time hereafter  delivered pursuant
     to Section 6.1, the Assignments and Amendments to Mortgages,  and all other
     certificates,  documents or instruments  delivered in connection  with this
     Agreement,  as the foregoing may be amended from time to time. In addition,
     the term "LOAN

                                       3



     PAPERS,"  as used in  Article  XIII  hereof,  shall also  include  the Bond
     Documents.

          "PERMITTED  SUBORDINATE DEBT" means Debt of Borrower  resulting from a
     single issue of Borrower's  7.5% Senior  Subordinated  Notes Due 2013 in an
     aggregate  outstanding  principal  balance  of  $225,000,000,  and  (a) the
     proceeds of which shall be used, in part,  to redeem in full  Borrower's 9%
     Senior  Subordinated Notes due 2008, (b) which is fully subordinated to the
     Obligations  pursuant to subordination  provisions which have been approved
     by Required  Banks,  and (c) which is not subject to negative  covenants or
     events  of  default  (or other  provisions  which  have the same  effect as
     negative  covenants or events of default)  which have not been  approved by
     Required Banks.

     1.3  ADDITIONAL  REPRESENTATION  AND  WARRANTY.  Article VIII of the Credit
Agreement  shall be amended to include a new  Section  8.21 which  shall read in
full as follows:

          "SECTION 8.21 BOND DOCUMENTS.  Borrower has provided to Administrative
     Agent a true and correct copy of each of the Bond Documents,  including all
     amendments  and   modifications   thereto  (whether   characterized  as  an
     amendment,  modification, waiver, consent or similar document). No material
     rights or  obligations  of any party to any of the Bond Documents have been
     waived  and no party  to any of the Bond  Documents  is in  default  of its
     obligations  or  in  breach  of  any  representations  or  warranties  made
     thereunder.  Each of the Bond Documents is a valid, binding and enforceable
     obligation  of each party  thereto in  accordance  with its terms and is in
     full force and effect.  As used in this Agreement,  the term  "OBLIGATIONS"
     shall include,  without limitation,  any and all obligations,  indebtedness
     and  liabilities  owed  by  Borrower  or any  other  Credit  Party  to Bond
     Purchaser  (whether  directly or as assignee of Bond Issuer) under the Bond
     Documents, which obligations, indebtedness and liabilities shall be secured
     by  Liens  on  all  property  described  as  collateral  security  for  the
     Obligations in accordance  with and pursuant to the Mortgages and the other
     Loan Papers.  Each  representation  and warranty  made by each party in the
     Bond  Documents is true and correct on the date of the First  Amendment and
     will be true and  correct on the date of each  Borrowing  or  issuance of a
     Letter of Credit."

     1.4 AMENDMENT TO COMPLIANCE  COVENANT.  Section 9.8 of the Credit Agreement
shall be amended to read in full as follows:

          "SECTION 9.8 COMPLIANCE  WITH LAWS AND  DOCUMENTS.  Borrower will, and
     will cause each other  Credit  Party to,  comply  with (a) all Laws,  their
     respective certificates (or articles) of incorporation,

                                       4



     bylaws,  regulations and similar organizational  documents and all Material
     Agreements to which any Credit Party is a party,  if a violation,  alone or
     when combined with all other such violations, could have a Material Adverse
     Effect, and (b) all Bond Documents to which any Credit Party is a party."

     1.5 AMENDMENT TO DEBT COVENANT.  Section 10.1 of the Credit Agreement shall
be amended to read in full as follows:

          "SECTION 10.1 INCURRENCE OF DEBT. Borrower will not, nor will Borrower
     permit any other Credit Party to,  incur,  become or remain  liable for any
     Debt;  provided,  that (a) Borrower may incur,  become or remain liable for
     (i) the Obligations,  (ii) Existing LC Exposure, (iii) without duplication,
     Debt evidenced by the Bond Loan Agreement, and (iv) other unsecured Debt in
     an aggregate amount outstanding at any time not to exceed $10,000,000,  (b)
     Borrower  may incur,  become and remain  liable for  Permitted  Subordinate
     Debt, and (c) any Restricted Subsidiary may incur, become and remain liable
     for  Permitted  Subordinate  Debt as a guarantor;  provided,  that (i) such
     Guarantees  of  Permitted  Subordinate  Debt shall be  subordinated  to the
     Obligations  pursuant  to  subordination  provisions  approved  by Required
     Banks, such approval to not be unreasonably withheld, and (ii) prior to the
     execution  and  delivery by any  Restricted  Subsidiary  of any Guaranty of
     Permitted  Subordinate Debt, such Restricted Subsidiary shall have executed
     and delivered to  Administrative  Agent for the ratable  benefit of Banks a
     Facility Guaranty,  and all the Equity of such Restricted  Subsidiary owned
     by Borrower shall have been pledged to  Administrative  Agent pursuant to a
     Borrower Pledge Agreement."

     1.6 AMENDMENT TO RESTRICTED  PAYMENTS COVENANT.  Section 10.2 of the Credit
Agreement shall be amended to read in full as follows:

          "SECTION  10.2  RESTRICTED  PAYMENTS.  Borrower  will  not,  nor  will
     Borrower permit any other Credit Party to, directly or indirectly,  declare
     or pay, or incur any liability to declare or pay, any  Restricted  Payment;
     provided,  that (a) any  Subsidiary of Borrower may make  Distributions  to
     Borrower, any Credit Party may make Distributions to any other Credit Party
     that has provided a Facility Guaranty, and all of the Equity of which owned
     by Borrower or any Indirect Subsidiary which is a Restricted Subsidiary (as
     applicable) has been pledged to Administrative Agent pursuant to a Borrower
     Pledge Agreement or a Subsidiary  Pledge Agreement (as applicable),  (c) so
     long as (1) no Default or Borrowing Base Deficiency  exists on the date any
     such  Distribution  is  declared or paid and no Default or Event of Default

                                       5


     would  result  therefrom,  and (2) the  Borrowing  Base does not exceed the
     Conforming Borrowing Base on the date such Restricted Payments are declared
     or paid, in addition to Distributions permitted under the preceding clauses
     (a) and (b), Borrower may make Restricted  Payments up to $5,000,000 in the
     aggregate in any Fiscal Year,  and (d) Borrower may make payments under and
     pursuant to the Bond Loan  Agreement and the Bond Note in  accordance  with
     the terms thereof."

     1.7  AMENDMENT  TO NO  AMENDMENTS  COVENANT.  Section  10.6  of the  Credit
Agreement shall be amended to read in full as follows:

          "SECTION  10.6  AMENDMENTS  TO  ORGANIZATIONAL  AND  OTHER  DOCUMENTS.
     Borrower  will not,  nor will  Borrower  permit any other  Credit Party to,
     enter  into or  permit  any  modification  or  amendment  of,  or waive any
     material  right or  obligation of any Person under (a) its  certificate  or
     articles of incorporation,  bylaws,  partnership agreement,  regulations or
     other  organizational  documents other than amendments,  modifications  and
     waivers which will not,  individually or in the aggregate,  have a Material
     Adverse Effect, and/or (b) any Bond Document."

     1.8  AMENDMENT  TO USE OF  PROCEEDS  COVENANT.  Section  10.7 of the Credit
Agreement shall be amended to read in full as follows:

          "SECTION 10.7 USE OF PROCEEDS.  The proceeds of Borrowings will not be
     used for any  purpose  other than (a) working  capital,  (b) to finance the
     acquisition,  exploration  and  development of Mineral  Interests,  (c) for
     general corporate  purposes,  (d) to refinance the obligations  outstanding
     under the Existing Credit Agreement, and (e) with respect to any Borrowings
     made or deemed made hereunder  through advances to Borrower pursuant to the
     Bond  Documents,  solely for the purposes set forth in the Bond  Documents.
     None of such proceeds (including,  without limitation,  proceeds of Letters
     of Credit issued hereunder) will be used,  directly or indirectly,  for the
     purpose,  whether  immediate,  incidental  or ultimate,  of  purchasing  or
     carrying  any  Margin  Stock,  and  none of such  proceeds  will be used in
     violation of applicable  Law  (including,  without  limitation,  the Margin
     Regulations).  Letters  of  Credit  will be issued  hereunder  only for the
     purpose of securing bids, tenders,  bonds,  contracts and other obligations
     entered  into  in the  ordinary  course  of  Borrower's  business.  Without
     limiting the foregoing,  no Letters of Credit will be issued  hereunder for
     the purpose of or providing credit  enhancement with respect to any Debt or
     equity  security  of any  Credit  Party or to  secure  any  Credit  Party's
     obligations   with   respect  to  Hedge

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     Transactions  other than Hedge  Transactions with a Bank or an Affiliate of
     such Bank."

     1.9 AMENDMENT TO HEDGE TRANSACTIONS  COVENANT.  Section 10.11 of the Credit
Agreement shall be amended to read in full as follows:

          "SECTION 10.11 HEDGE TRANSACTIONS.

               (a) Borrower will not, nor will Borrower  permit any other Credit
          Party to, hedge  (which  hedges shall not have a tenor of greater than
          four (4) years) more than the following percentages of its "forecasted
          production  from Proved  Mineral  Interests" (as defined below) during
          any applicable  calendar year (a  "MEASUREMENT  PERIOD"),  as measured
          from the current date (a "MEASUREMENT date"):



                                   Calendar Year Hedged           Percentage Limitation
                                   --------------------           ---------------------
                         (relative to measurement date)

                                                                   Oil            Gas

                                                                            
                             Current Year                          85%            85%
                             First Subsequent Year                 70%            70%
                             Second Subsequent Year                55%            55%
                             Third Subsequent Year                 40%            40%



          provided, that, if any measurement date occurs in the final two Fiscal
          Quarters of any measurement period, for the purpose of determining the
          appropriate   percentage   limitation   from  the  table  above,   the
          limitations  of the  current  year shall  apply to both the  remaining
          portion of that current year and the entire  subsequent  year, and the
          limitations  of the first  subsequent  year shall  apply to the second
          subsequent  year,  and so  forth  (as an  example  only,  and  for the
          avoidance of doubt,  for any  measurement  date  occurring  during the
          first two Fiscal  Quarters of 2003,  an Oil and Gas Hedge  Transaction
          for 2004  would  have a 70%  limitation;  provided,  however,  for any
          measurement  date  occurring  during the last two Fiscal  Quarters  of
          2003,  an Oil and Gas Hedge  Transaction  for 2004  would  have an 85%
          limitation);  provided,  further,  that, Borrower may enter into Hedge
          Transactions  consisting  solely of a floor price (i.e.  floor, put or
          option) so long as the amount of Hydrocarbons which are the subject of
          any such Hedge Transaction in existence at any such time do not exceed
          one-hundred percent (100%) of Borrower's  anticipated  production from
          Proved  Mineral  Interests  during the term of any such existing Hedge
          Transaction; and

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               (b) Borrower will not permit its (i) production of oil during any
          Fiscal  Quarter to be less than the  aggregate  amount of oil which is
          the  subject  of Oil and Gas Hedge  Transactions  during  such  Fiscal
          Quarter,  or (ii)  production  of gas during any Fiscal  Quarter to be
          less than the aggregate  amount of gas which is the subject of Oil and
          Gas Hedge Transactions during such Fiscal Quarter.

     As used in Section  10.11(a)  above,  "forecasted  production  from  Proved
Mineral  Interests"  shall mean the forecasted  production for oil and gas, each
taken  individually,  for the applicable  calendar year as reflected in the most
recent Reserve Report delivered to Administrative  Agent pursuant to Section 5.1
hereof, after giving effect to any pro forma adjustments for the consummation of
any "material  acquisitions or dispositions"  between the effective date of such
Reserve Report and the measurement date. "Material acquisitions or dispositions"
means any  acquisition or  disposition  of any asset with a Recognized  Value in
excess of $10,000,000, or any cumulative total of all immaterial acquisitions or
dispositions  which  in the  aggregate  have a  Recognized  Value in  excess  of
$10,000,000."

     1.10  ADDITIONAL  COVENANT.  Article  X of the  Credit  Agreement  shall be
amended to include a new Section 10.16 which shall read in full as follows:

          "SECTION 10.16 BORROWINGS RELATED TO BOND OFFERING.  Borrower will not
     request or receive any Borrowing hereunder, the proceeds of which are to be
     used  to fund  advances  under  the  Bonds,  except  in  accordance  and in
     compliance with the terms of the Bond Documents.  Borrower agrees that each
     Request  for  Borrowing,  the  proceeds  of  which  are to be  used to fund
     advances  under the Bonds,  will  include,  in addition to the  information
     described in Section 3.2 hereof, a certification from an Authorized Officer
     as to the  purpose  and  utilization  of the  proceeds  of such  Borrowing.
     Additionally,  notwithstanding  anything to the  contrary  contained in the
     Loan Papers or Bond  Documents,  each  payment of  principal  and  interest
     received  by  Bond  Purchaser  on  the  Bonds  shall  be  deemed  to be and
     considered as, without duplication,  a payment of principal and interest on
     the  Revolving  Loan,  and any  borrowing  by Borrower  under the Bond Loan
     Agreement or on any Bond Note shall also be deemed to be and considered as,
     without  duplication,  a  Borrowing  of a  Revolving  Loan  hereunder  (the
     outstanding principal of which shall be and be deemed to be included in the
     Outstanding Credit for all purposes hereunder)."

          1.11  AMENDMENT  TO  EVENTS OF  DEFAULT.  Section  12.1 of the  Credit
     Agreement shall be amended (a) to delete the word "or" at the end of clause
     (k) thereof,  (b) to insert the word "or" at the end of clause (l) thereof,
     and  (c) to add a new  clause  (m)  thereto  which  shall  read  in full as
     follows:

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          "(m) any Credit  Party or Bond Issuer shall fail to observe or perform
     any  covenant  or  agreement  contained  in any  Bond  Document  after  any
     applicable cure period;".

     1.12 AMENDMENT TO AGENT  PROVISIONS.  Article XIII of the Credit  Agreement
shall be amended  to include a new  Section  13.17  which  shall read in full as
follows:

          "SECTION  13.17  BOND  DOCUMENTS.   Without  limiting  the  power  and
     authority of Administrative Agent described herein, Banks hereby:

          (a)  appoint   Administrative   Agent,  as  Bond  Purchaser,   as  its
     contractual   representative  under  the  Bond  Documents  and  irrevocably
     authorize Administrative Agent to act as the contractual  representative of
     each Bank under the Bond Documents with the rights and duties expressly set
     forth  therein,  and to hold the  Bonds on behalf  of the  Banks,  it being
     expressly understood and agreed,  however,  that Administrative Agent shall
     not have any fiduciary  responsibilities  to any Bank by reason of the Bond
     Documents;

          (b) empower and authorize  Administrative Agent to execute and deliver
     the Bond Documents to which it is a party; and

          (c) agree that all  references in this Article XIII to "LOAN  PAPERS,"
     shall be deemed to include, without limitation, the Bond Documents."

SECTION 2. CONSENT AND WAIVER. In reliance on the  representations,  warranties,
covenants and agreements  contained in this First Amendment,  and subject to the
satisfaction  of the  conditions  precedent  set  forth  in  Section  4  hereof,
Executing Banks hereby (a) consent to (i) the  consummation of the Bond Offering
in accordance with the terms of the Bond  Documents,  and (ii) the execution and
delivery  by  Borrower  of the Bond  Documents  to which it is a party,  and the
performance of its obligations and the exercise of its rights under and pursuant
thereto,  (b) waive  compliance  by Borrower  with each  provision of the Credit
Agreement and the other Loan Papers to the extent, but only to the extent,  that
the consummation of the Bond Offering and the execution and delivery of the Bond
Documents by Borrower,  and the  performance of its obligations and the exercise
of its rights under and pursuant thereto, violate such provisions or result in a
Default or Event of Default under the Credit Agreement or the other Loan Papers,
and (c) waive  compliance by Borrower with Section 10.11 of the Credit Agreement
with respect to, but only with respect to,  non-compliance  by Borrower with the
provisions of Section 10.11 of the Credit Agreement prior to the Effective Date.
The consent and waivers herein contained are expressly  limited as follows:  (i)
such  consent  and  waivers  are  limited  solely  to (as  applicable)  (A)  the
consummation  of the Bond  Offering  in  accordance  with the  terms of the Bond
Documents  most  recently  provided  to   Administrative   Agent,  and  (B)  the
non-compliance  by Borrower  with the  provisions of Section 10.11 of the Credit
Agreement  prior to the  Effective  Date,  and (ii) such consent and waivers are
each a limited,  one-time consent and waiver, and nothing contained herein shall
obligate  Banks to grant any additional or future consent or waiver with respect
to, or in connection with, any provision of any Loan Paper.

SECTION 3. BORROWING BASE AND CONFORMING  BORROWING BASE.  Effective as of April
1, 2003,  the Borrowing  Base and the  Conforming  Borrowing  Base shall each be
reaffirmed at

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$220,000,000   and  each   shall   remain   at   $220,000,000   until  the  next
Redetermination  thereafter.  Borrower and Banks agree that the  Redetermination
provided  for in this Section 3 shall not be construed or deemed to be a Special
Redetermination for purposes of Section 5.3 of the Credit Agreement.

SECTION 4.  CONDITIONS  PRECEDENT TO  AMENDMENTS.  The  amendments  contained in
Section 1 hereof and the  consent and waiver  contained  in Section 2 hereof are
subject to the satisfaction of each of the following  conditions precedent on or
before May 31, 2003:

     4.1  CONSUMMATION  OF BOND  OFFERING.  Subject  only to the granting of the
consent thereto contained in Section 2 hereof, the Bond Offering shall have been
consummated in accordance with the terms of the Bond Documents.

     4.2 MATERIAL AGREEMENTS. Administrative Agent shall have been provided with
fully executed copies of (a) the Bond Documents, and (b) all material documents,
instruments and agreements  executed and/or  delivered by Borrower or any of its
Subsidiaries in connection with the issuance of the Permitted  Subordinate Debt,
together with a certificate  from an Authorized  Officer of Borrower  certifying
that  such  copies  are  accurate  and  complete  and   represent  the  complete
understanding  and  agreement of the parties with respect to the subject  matter
thereof.

     4.3  RESOLUTIONS.  Borrower shall have provided  Administrative  Agent with
copies of  resolutions  and comparable  authorizations  approving (a) this First
Amendment,  (b) any other  Loan  Papers to be  executed  or  delivered  pursuant
hereto, and (c) the Bond Documents to be executed or delivered by Borrower,  and
further  authorizing the  transactions  contemplated by this First Amendment and
any other Loan Papers to be executed or delivered pursuant hereto,  duly adopted
by the Board of  Directors  of  Borrower  accompanied  by a  certificate  of the
Secretary or comparable Authorized Officer of Borrower that such copies are true
and correct copies of resolutions  duly adopted at a meeting of or (if permitted
by  applicable  Law and, if required by such Law, by the Bylaws of  Borrower) by
the unanimous  written  consent of the Board of Directors of Borrower,  and that
such  resolutions  constitute all the  resolutions  adopted with respect to such
transactions, have not been amended, modified or revoked in any respect, and are
in full force and effect as of the date hereof.

     4.4  OPINION.  Borrower  shall  have  delivered  an  opinion  of  Jenkens &
Gilchrist,   counsel  to  Borrower,  with  respect  to  the  due  authorization,
execution,  delivery and  enforceability  of this First  Amendment  and the Bond
Documents to which Borrower is a party,  and such other matters  related thereto
as Administrative Agent shall require.

     4.5 AMENDMENT FEE. Upon execution of the First Amendment by Required Banks,
Borrower shall pay to Administrative  Agent, for the benefit of Executing Banks,
a fee in the amount of $3,000 for each Executing  Bank. Such $3,000 fee shall be
distributed  by  Administrative  Agent to each Executing Bank provided that such
Executing  Bank executes and delivers  this First  Amendment on or before May 7,
2003.

     4.6 NO DEFAULT. No Default or Event of Default shall have occurred which is
continuing.

                                       10


     4.7 OTHER  DOCUMENTS.  Administrative  Agent shall have been  provided with
such other documents,  instruments and agreements, and Borrower shall have taken
such actions, as Administrative  Agent may reasonably require in connection with
this First Amendment and the transactions contemplated hereby.

SECTION 5.  REPRESENTATIONS  AND  WARRANTIES  OF  BORROWER.  To induce Banks and
Administrative  Agent  to enter  into  this  First  Amendment,  Borrower  hereby
represents and warrants to Banks and Administrative Agent as follows:

     5.1 REAFFIRM EXISTING  REPRESENTATIONS AND WARRANTIES.  Each representation
and warranty of Borrower  contained in the Credit  Agreement  and the other Loan
Papers is true and correct on the date hereof and will be true and correct after
giving effect to the amendments set forth in Section 1 hereof.

     5.2 DUE AUTHORIZATION; NO CONFLICT. The execution, delivery and performance
by Borrower of this First Amendment are within Borrower's corporate powers, have
been duly authorized by all necessary action, require no action by or in respect
of, or filing with, any governmental body, agency or official and do not violate
or constitute a default  under any  provision of applicable  law or any Material
Agreement binding upon Borrower or the Subsidiaries of Borrower or result in the
creation  or  imposition  of any Lien upon any of the assets of  Borrower or the
Subsidiaries of Borrower except Permitted Encumbrances.

     5.3 VALIDITY AND ENFORCEABILITY. This First Amendment constitutes the valid
and binding  obligation of Borrower  enforceable  in accordance  with its terms,
except  as  (i)  the  enforceability  thereof  may  be  limited  by  bankruptcy,
insolvency or similar laws affecting  creditor's rights generally,  and (ii) the
availability  of equitable  remedies may be limited by equitable  principles  of
general application.

     5.4 NO DEFAULT  OR EVENT OF  DEFAULT.  No  Default or Event of Default  has
occurred which is continuing.

SECTION 6. MISCELLANEOUS.

     6.1  REAFFIRMATION OF LOAN PAPERS.  Any and all of the terms and provisions
of the  Credit  Agreement  and the Loan  Papers  shall,  except as  amended  and
modified hereby,  remain in full force and effect.  The amendments  contemplated
hereby  shall not limit or impair any Liens  securing the  Obligations,  each of
which are hereby  ratified,  affirmed and extended to secure the  Obligations as
they may be increased pursuant hereto.

     6.2  PARTIES IN  INTEREST.  All of the terms and  provisions  of this First
Amendment  shall bind and inure to the benefit of the  parties  hereto and their
respective successors and assigns.

     6.3 LEGAL EXPENSES.  Borrower hereby agrees to pay on demand all reasonable
fees and expenses of counsel to Administrative  Agent incurred by Administrative
Agent in  connection  with the  preparation,  negotiation  and execution of this
First Amendment and all related documents.

                                       11



     6.4 COUNTERPARTS. This First Amendment may be executed in counterparts, and
all parties need not execute the same  counterpart;  however,  no party shall be
bound by this First  Amendment  until all parties have  executed a  counterpart.
Facsimiles shall be effective as originals.

     6.5 COMPLETE AGREEMENT.  THIS FIRST AMENDMENT, THE CREDIT AGREEMENT AND THE
OTHER LOAN PAPERS REPRESENT THE FINAL AGREEMENT  BETWEEN THE PARTIES AND MAY NOT
BE CONTRADICTED BY EVIDENCE OF PRIOR,  CONTEMPORANEOUS OR ORAL AGREEMENTS OF THE
PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN OR AMONG THE PARTIES.

     6.6 HEADINGS.  The headings,  captions and arrangements  used in this First
Amendment are, unless specified otherwise, for convenience only and shall not be
deemed to limit, amplify or modify the terms of this First Amendment, nor affect
the meaning thereof.

     IN WITNESS WHEREOF,  the parties hereto have caused this First Amendment to
be duly executed by their  respective  authorized  officers on the date and year
first above written.



                           [Signature Pages to Follow]





                                SIGNATURE PAGE TO
                        FIRST AMENDMENT TO THIRD AMENDED
                          AND RESTATED CREDIT AGREEMENT




                            BORROWER:
                            ---------

                            DENBURY RESOURCES INC.,
                            a Delaware corporation


                            By:
                               -------------------------------------------------
                                                 Phil Rykhoek,
                               Senior Vice President and Chief Financial Officer






                               SIGNATURE PAGE TO
                        FIRST AMENDMENT TO THIRD AMENDED
                          AND RESTATED CREDIT AGREEMENT



                            ADMINISTRATIVE AGENT:
                            --------------------

                            BANK ONE, NA, as Administrative Agent


                            By:
                               -------------------------------------------------
                                          J. Scott Fowler,
                                          Director, Capital Markets


                            BANKS:
                            -----


                            BANK ONE, NA

                            By:
                               -------------------------------------------------
                                          J. Scott Fowler,
                                          Director, Capital Markets






                               SIGNATURE PAGE TO
                        FIRST AMENDMENT TO THIRD AMENDED
                          AND RESTATED CREDIT AGREEMENT



                            FORTIS CAPITAL CORP.


                            By:
                               -------------------------------------------------
                            Name:
                                 -----------------------------------------------
                            Title:
                                  ----------------------------------------------

                            By:
                               -------------------------------------------------
                            Name:
                                 -----------------------------------------------
                            Title:
                                  ----------------------------------------------




                               SIGNATURE PAGE TO
                        FIRST AMENDMENT TO THIRD AMENDED
                          AND RESTATED CREDIT AGREEMENT



                            CREDIT LYONNAIS NEW YORK BRANCH


                            By:
                               -------------------------------------------------
                            Name:
                               -------------------------------------------------
                            Title:
                                  ----------------------------------------------





                               SIGNATURE PAGE TO
                        FIRST AMENDMENT TO THIRD AMENDED
                          AND RESTATED CREDIT AGREEMENT



                            COMERICA BANK - TEXAS


                            By:
                               -------------------------------------------------
                            Name:
                                 -----------------------------------------------
                            Title:
                                  ----------------------------------------------





                               SIGNATURE PAGE TO
                        FIRST AMENDMENT TO THIRD AMENDED
                          AND RESTATED CREDIT AGREEMENT



                            UNION BANK OF CALIFORNIA, N.A.


                            By:
                               -------------------------------------------------
                            Name:
                                 -----------------------------------------------
                            Title:
                                  ----------------------------------------------






                               SIGNATURE PAGE TO
                        FIRST AMENDMENT TO THIRD AMENDED
                          AND RESTATED CREDIT AGREEMENT



                            WELLS FARGO BANK TEXAS, N.A.

                            By:
                               -------------------------------------------------
                            Name:
                                 -----------------------------------------------
                            Title:
                                  ----------------------------------------------





                               SIGNATURE PAGE TO
                        FIRST AMENDMENT TO THIRD AMENDED
                          AND RESTATED CREDIT AGREEMENT



                            FLEET NATIONAL BANK

                            By:
                               -------------------------------------------------
                            Name:
                                 -----------------------------------------------
                            Title:
                                  ----------------------------------------------






                               SIGNATURE PAGE TO
                        FIRST AMENDMENT TO THIRD AMENDED
                          AND RESTATED CREDIT AGREEMENT



                            BANK OF SCOTLAND

                            By:
                               -------------------------------------------------
                            Name:
                                 -----------------------------------------------
                            Title:
                                  ----------------------------------------------






                               SIGNATURE PAGE TO
                        FIRST AMENDMENT TO THIRD AMENDED
                          AND RESTATED CREDIT AGREEMENT



                            BANK OF AMERICA, N.A.

                            By:
                               -------------------------------------------------
                            Name:
                                 -----------------------------------------------
                            Title:
                                  ----------------------------------------------





                               SIGNATURE PAGE TO
                        FIRST AMENDMENT TO THIRD AMENDED
                          AND RESTATED CREDIT AGREEMENT



                            COMPASS BANK

                            By:
                               -------------------------------------------------
                            Name:
                                 -----------------------------------------------
                            Title:
                                  ----------------------------------------------