Ruins of the Great House Pueblo and kiva at the Chaco Pueblo site at Chimney Rock National Monument, in Chimney Rock State Park, in San Juan National Forest, South West Colorado, USA, and smoke from a wildfire. The ridge was an ancestral Puebloan site occupied 925-1125 AD by around 2000 Indians. Chimney Rock was made a National Monument in 2012 and is listed on the US National Register of Historic Places and the Colorado State Register of Historic Properties. Picture by Manuel Cohen
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