Walnut Canyon National Monument, Arizona
The Sinagua people built cliff dwellings in the 350-foot deep Walnut Canyon near Flagstaff, Arizona around 1100 A.D., abandoning them perhaps 150 years later for unknown reasons.
The Sinagua people built cliff dwellings in the 350-foot deep Walnut Canyon near Flagstaff, Arizona around 1100 A.D., abandoning them perhaps 150 years later for unknown reasons.