Colorado Revised Statutes Title 38. Property Real and Personal § 38-44-103. Pleadings--trial of issues

The action shall be a civil action, and the only necessary pleadings therein shall be the petition of plaintiff describing the land involved and, insofar as may be, the interest of the respective party and asking that certain corners and boundaries therein described, as accurately as may be, be established. Either the plaintiff or the defendant, by proper plea, may put in issue the fact that certain alleged boundaries or corners are true ones or that such have been recognized and acquiesced in by the parties or their grantors for a period of twenty consecutive years, which issue may be tried before a commission appointed in the discretion of the court.