Exhibit 32.1
                                  CERTIFICATION
                                   PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002


     In connection with the Quarterly Report on Form 10-Q of St. Mary Land &
Exploration Company (the "Company") for the quarter ended March 31, 2004 as
filed with the Securities and Exchange Commission on the date hereof (the
"Report"), Mark A. Hellerstein, as Chief Executive Officer of the Company, and
David W. Honeyfield, as Vice President - Finance of the Company, each hereby
certifies, pursuant to and solely for the purpose of 18 U.S.C. ss. 1350, as
adopted pursuant to ss. 906 of the Sarbanes-Oxley Act of 2002, to the best of
his knowledge and belief, that:

     (1) The Report fully  complies  with the  requirements  of section 13(a) or
15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d)); and

     (2)  The  information  contained  in the  Report  fairly  presents,  in all
material  respects,  the  financial  condition  and results of operations of the
Company.



/S/ MARK A. HELLERSTIN
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Mark A. Hellerstein
Chief Executive Officer
April 30, 2004


/S/ DAVID W. HONEYFIELD
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David W. Honeyfield
Vice President - Finance
(principal financial officer)
April 30, 2004