Canyons of the Ancients National Monument in southwestern Colorado contains a huge number of archaeological sites (more than 6000 recorded, up to 100 per square mile in some places) representing the Ancestral Puebloan and other Native American cultures, as well as important historic and environmental resources.

Bureau of Land Management Colorado – Canyons of the Ancients National Monument

The area of this relatively new National Monument is east of Hovenweep National Monument and north of Mesa Verde National Park. It includes Lowry Ruins, Yellowjacket Ruins and many, many less-well-known ruins. The headquarters are in the Anasazi Heritage Center, between Dolores and Cortez. mjh