Black and white lantern slide of a cliff dwelling in Mesa Verde National Park, looking north.

Black and white lantern slide close up view of a cliff dwelling in Mesa Verde National Park.

Black and white lantern slide close up view of a cliff dwelling in Mesa Verde National Park, looking north.

Black and white lantern slide of "Fat Man's Misery" section of the Square Tower House at Mesa Verde National Park.

Black and white lantern slide close up view of a wooden ladder at the Square Tower house at Mesa Verde National Park.

Mesa Verde National Park is located in Montezuma County, Colorado. It was established as a national park on June 29, 1906 to protect the cliff dwellings built by the Anasazi. It was designated a World Heritage Site on September 6, 1978. 16mm film…

Mesa Verde National Park is located in Montezuma County, Colorado. It was established as a national park on June 29, 1906 to protect the cliff dwellings built by the Anasazi. It was designated a World Heritage Site on September 6, 1978. 16mm film…

D.J. Angus and Robert Annis overlooking a valley at Mesa Verde, Colorado.

Ruins at Mesa Verde, Colorado.

Ruins at Mesa Verde, Colorado.

Sun Temple at Mesa Verde, Colorado.

Trail to Balcony House at Mesa Verde, Colorado.