Chimney Rock National Monument is a 4726acre U.S. National Monument in San Juan National Forest in southwestern Colorado which includes an archaeological site. This area is located in Archuleta County, Colorado between Durango and Pagosa Springs and is managed for archaeological protection, public interpretation, and education. The Chimney Rock Archaeological Site has been listed on the National Register of Historic Places since 1970. U.S. President Barack Obama created Chimney Rock National Monument by proclamation on September 21, 2012 under authority of the Antiquities Act.GeographyChimney Rock lies on 4,726 acres of San Juan National Forest land surrounded by the Southern Ute Indian Reservation. Chimney Rock itself occupies 1,000 acres of the site, and is approximately 315 feet tall. Next to Chimney Rock is Companion Rock, which is a popular nesting spot for the Peregrine Falcon.The primary settlements that have been excavated lie on the ridge that eventually terminates at Chimney Rock. The ridge is mostly bedrock made of sandstone.HistoryThe Ancestral Puebloan site, designated on the National Register of Historic Places in 1970, was a community inhabited between Durango and Pagosa Springs about 1,000 years ago with about 200 rooms. Rooms in the buildings were used for living, work areas and ceremonial purposes. The site is located within the San Juan National Forest Archaeological Area on 4,726 acres of land. Between May 15 and September 30 the Visitor Center is open and guided walking tours are conducted daily.