Exhibit 4.1

                          FIRST SUPPLEMENTAL INDENTURE

     This First Supplemental Indenture (this "Supplemental  Indenture") dated as
of December 29, 2003 is among  Denbury  Resources  Inc., a Delaware  corporation
(the  "Company"),  on  behalf  of  itself  and the  Subsidiary  Guarantors  (the
"Subsidiary  Guarantors") under the Indenture as defined below, Denbury Onshore,
LLC ("Onshore"),  Denbury Holdings,  Inc., a Delaware  corporation (the "Holding
Company"),  Denbury Operating  Company,  a Delaware  corporation  ("OPCO"),  and
JPMorgan  Chase Bank,  as Trustee,  and  supplements,  amends and modifies  that
certain  Indenture dated as of March 25, 2003 among the Company,  the Subsidiary
Guarantors and the Trustee (the "Indenture").

                                    RECITALS:

     The  Company  has  heretofore  executed  and  delivered  to the Trustee the
Indenture providing for the issuance of the Company's 7 1/2% Senior Subordinated
Notes Due 2013 (the "Securities").

     The Board of Directors of the Company has  determined  it to be in the best
interests of the Company to effect the formation of a holding company structure.
Accordingly,  the Company,  the Holding  Company and Onshore  have  executed and
delivered an Agreement  and Plan of Merger to Form Holding  Company  dated as of
December 22, 2003 to be effective  9:00 a.m.  Delaware  time,  December 29, 2003
(the "Merger  Effective Time") pursuant to which the Company will be merged into
Onshore,  a Delaware  single member  limited  liability  company and an indirect
subsidiary of the Company, with Onshore being the survivor of the merger between
the  Company and  Onshore,  and whereby  the  outstanding  capital  stock of the
Company  will be  converted  into  capital  stock of the  Holding  Company  (the
"Merger").  At the  Merger  Effective  Time the  corporate  name of the  Holding
Company will be changed to "Denbury Resources Inc."

     As a result of effectuation of the Merger,  the Holding Company will become
a holding  company and  Onshore  will become a  wholly-owned  subsidiary  of the
Holding Company.

     The Merger  will be  effected  pursuant  to Section  251(g) of the  General
Corporation Law of the State of Delaware ("DGCL"), which permits effectuation of
such a merger without a vote of stockholders of either constituent corporation.

     On  December  29,  2003 at 1:00 p.m.  Delaware  time  (the  "Capitalization
Effective Time"),  the Holding Company will capitalize OPCO as a new subsidiary,
at 11:00 a.m.  Delaware  time  Onshore will  distribute  the stock of one of its
subsidiaries  that is a Subsidiary  Guarantor,  Denbury  Offshore  Inc.,  to the
Holding  Company,  and  the  Holding  Company  will  distribute  its  membership
interests in Onshore to OPCO,  causing Onshore to become a direct  subsidiary of
OPCO and an indirect  subsidiary of the Holding  Company.  Denbury Offshore Inc.
will remain a  Subsidiary  Guarantor  pursuant to the terms of the  Indenture as
amended by this Supplemental Indenture.

     Section 5.01 of the Indenture provides that the Company may not consolidate
with or merge  with or into any  Person  unless  such  Person is  organized  and
existing  under  the laws of the  United  States or any  state  thereof  and the
successor  company  by virtue of the  Merger,  in this case






Onshore,  expressly assumes, by supplemental indenture executed and delivered to
the Trustee,  all the  obligations  of the Company under the  Securities and the
Indenture.

     The Holding  Company and Onshore intend to assume all of the obligations of
the  Company  under  the  Securities  and  the  Indenture  with  respect  to the
indebtedness  previously issued by the Company under the Indenture.  In no event
as a result of this  Supplemental  Indenture  or the  assumption  by the Holding
Company of the  obligations of the Company under the Indenture,  will Onshore be
released from the obligations  under the Securities and the Indenture that it is
assuming herein.

     Pursuant to Sections  9.01(2),  (5) and (8) of the Indenture,  the Trustee,
the Company and the Subsidiary  Guarantors are authorized to execute and deliver
this Supplemental Indenture without notice to or consent of any Securityholder.

                                    AGREEMENT

     NOW, THEREFORE,  in consideration of the foregoing,  and for other good and
valuable  consideration,  the  receipt  and  sufficiency  of  which  are  hereby
acknowledged  by the parties  hereto,  the parties hereto  covenant and agree as
follows:

                                   ARTICLE 1

     Section 1.1 Definitions.

     (a) For all purposes of this  Supplemental  Indenture,  except as otherwise
herein  expressly  provided or unless the context  otherwise  requires:  (i) the
terms and expressions  used herein shall have the same meanings as corresponding
terms  and  expressions  used in the  Indenture;  and (ii) the  words  "herein,"
"hereof"  and  "hereby"  and  other  words  of  similar   import  used  in  this
Supplemental  Indenture refer to this Supplemental  Indenture as a whole and not
to any particular section hereof.

     (b) The term  "Subsidiary"  in the  Indenture  shall  refer to a direct  or
indirect subsidiary of either the Holding Company or Onshore.

     (c) Whenever the phrase "the Company and its  Restricted  Subsidiaries"  is
used  in the  Indenture,  it  shall  mean  the  Holding  Company  and all of its
Restricted Subsidiaries, including Onshore, on a consolidated basis.

     (d) Whenever the term "the Company" is used in the Indenture, it shall mean
either or both of the Holding  Company and  Onshore,  as  appropriate,  so as to
enable compliance with, and confer the rights under, the covenants,  agreements,
terms and obligations of the Indenture and the Securities.

     Section 1.2  Assignment  and  Assumption.  Onshore and the Holding  Company
hereby  assume all of the  Company's  obligations  under the  Indenture  and the
Securities  at the  Merger  Effective  Time  and as  such  shall  thereafter  be
obligated to timely pay, perform and discharge, each and every obligation of the
Company under and with respect to the Indenture and

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the Securities.  The Company hereby assigns,  at the Merger  Effective Time, its
rights and obligations under the Indenture and the Securities to Onshore and the
Holding Company.

     Section 1.3  Ratification  of  Indenture;  Supplemental  Indenture  Part of
Indenture.  Except as expressly amended hereby, the Indenture is in all respects
ratified and  confirmed and all the terms,  conditions  and  provisions  thereof
shall remain in full force and effect. This Supplemental  Indenture shall form a
part  of the  Indenture  for  all  purposes,  and  every  holder  of  Securities
heretofore or hereafter authenticated and delivered shall be bound hereby.

     Section  1.4  Agreement  to  Guarantee.  Effective  at  the  Capitalization
Effective Time,  OPCO agrees that it will,  jointly and severally with all other
Subsidiary  Guarantors,  guarantee the  obligations  under the Securities on the
terms and subject to the conditions set forth in Article 11 of the Indenture and
be bound by all other applicable provisions of the Indenture.


                                   ARTICLE 2

     Section 2.1  Effectiveness.  Although  this  Supplemental  Indenture may be
executed and  delivered  by the parties  hereto prior  thereto,  the  provisions
hereof shall not become effective unless and until the Merger becomes  effective
under the DGCL and, under such  circumstances,  except as to Section 1.4 hereof,
shall become effective  concurrently with the Merger Effective Time. Section 1.4
hereof shall become effective  concurrently  with the  Capitalization  Effective
Time.  From and after the Merger  Effective  Time and, as to Section 1.4 hereof,
the  Capitalization  Effective  Time,  the  Indenture,  as hereby  supplemented,
amended and modified, shall remain in full force and effect.

     Section  2.2   References.   Each   reference  in  the  Indenture  of  this
Supplemental  Indenture  to any  article,  section,  term  or  provision  of the
Indenture  shall mean and be deemed to refer to such article,  section,  term or
provision of the Indenture, as modified by this Supplemental  Indenture,  except
where the context otherwise indicates.

     Section  2.3  Benefit.  All the  covenants,  provisions,  stipulations  and
agreements  contained in this  Supplemental  Indenture  are and shall be for the
sole and exclusive benefit of the parties hereto,  their successors and assigns,
and of the holders and registered owners of the Securities.

     Section 2.4 Counterparts. The parties may sign any number of copies of this
Supplemental  Indenture.  Each signed copy shall be an original, but all of them
together represent the same agreement.

     Section 2.5 Governing Law. THIS  SUPPLEMENTAL  INDENTURE  SHALL BE GOVERNED
BY, AND  CONSTRUED  IN  ACCORDANCE  WITH,  THE LAWS OF THE STATE OF NEW YORK BUT
WITHOUT GIVING EFFECT TO APPLICABLE PRINCIPLES OF CONFLICTS OF LAW TO THE EXTENT
THAT THE  APPLICATION  OF THE LAWS OF  ANOTHER  JURISDICTION  WOULD BE  REQUIRED
THEREBY.

                                       3


     Section  2.6  Trustee  Makes  No  Representation.   The  Trustee  makes  no
representation as to the validity or sufficiency of this Supplemental Indenture.

     Section 2.7 Effect of Headings. The Article and Section headings herein are
for convenience only and shall not affect the construction thereof.

                            [signature page follows]









     IN WITNESS  WHEREOF,  the parties  hereto  have  caused  this  Supplemental
Indenture to be duly executed as of the date first above written.


                         DENBURY ONSHORE, LLC

                         By:     /s/ Phil Rykhoek
                                 -----------------------------------------------
                         Name:   Phil Rykhoek
                         Title:  Senior Vice President, Chief Financial Officer
                                 and Secretary


                         DENBURY RESOURCES, INC., on behalf of itself
                         and on behalf of the Subsidiary Guarantors

                         By:     /s/ Gareth Roberts
                                 -----------------------------------------------
                         Name:   Gareth Roberts
                         Title:  President and Chief Executive Officer


                         DENBURY HOLDINGS, INC.

                         By:     /s/ Phil Rykhoek
                                 -----------------------------------------------
                         Name:   Phil Rykhoek
                         Title:  Senior Vice President, Chief Financial Officer
                                 and Secretary


                         DENBURY OPERATING COMPANY, as Subsidiary Guarantor

                         By:     /s/ Phil Rykhoek
                                 -----------------------------------------------
                         Name:   Phil Rykhoek
                         Title:  Senior Vice President, Chief Financial Officer
                                 and Secretary


                         JPMORGAN CHASE BANK, as Trustee

                         By:     /s/ Rebecca A. Newman
                                 -----------------------------------------------
                         Name:   Rebecca A. Newman
                         Title:  Vice President