Colo. Rev. Stat. § 30-5-106
Beginning at the intersection of the west line of range fifty west with the north line of township twenty-eight south; thence south along said range line to the southwest corner of township thirty south, range fifty west; thence west on the north line of township thirty-one south, range fifty west, to the northwest corner of said township and range; thence south on the west line of range fifty west to its intersection with the south boundary line of Colorado; thence east on said south boundary line to the southeast corner boundary of Colorado; thence north along the east boundary line of Colorado to its intersection with the north line of township twenty-eight south, range forty-one west; and thence west on the north line of township twenty-eight south to the place of beginning. Said public land survey lines are based upon the sixth principal meridian.
C.R.S. § 30-5-106