Canyons of the Ancients National Monument is a national monument protecting an archaeologically significant landscape located in the southwestern region of the U.S. state of Colorado. The monument's 176,056 acres are managed by the Bureau of Land Management, as directed in the presidential proclamation which created the site on June 9, 2000. Canyons of the Ancients National Monument is part of the National Landscape Conservation System, better known as the National Conservation Lands.