Colo. Rev. Stat. § 30-5-159
Beginning at the intersection of the ninth standard parallel north with the east line of range eight east; thence north on said range line to its intersection with the tenth standard parallel north; thence west on said parallel to its intersection with the west line of range four east; thence north on said range line to its intersection with the north line of township forty-one north; thence west on said township line to its intersection with the west line of range three east; thence south on said range line to the southeast corner of township forty north, range two east; thence west on the south line of said township and range to the northwest corner of township thirty-nine north, range three east; thence south on the west line of range three east to its intersection with the ninth standard parallel north; thence east on said parallel to the place of beginning. Said public land survey lines are based upon the New Mexico principal meridian.
C.R.S. § 30-5-159