White House Ruin, Canyon de Chelly National Monument. Occupied about 1000 A.D.

White House Ruin, Canyon de Chelly National Monument. Occupied about 1000 A.D.

White House Ruin, Canyon de Chelly National Monument. Occupied about 1000 A.D.

Spider Rock, Canyon de Chelly National Monument. 800 feet of sandstone.

Mummy Cave Ruin, Canyon de Chelly National Monument. Abandoned about 1300 A.D.

Wukoki Pueblo, Wupatki National Monument. Occupied about 1200 A.D.

Wupatki Pueblo, Wupatki National Monument. Occupied about 1200 A.D.

The Wupatki Basin, seen from Little Doney Craters.

The Wupatki Basin, seen from Little Doney Craters. In the distance, the San Francisco Peaks.

One of the Little Doney Craters, seen from the other.

Lomaki Pueblo, Wupatki National Monument, silhouetted against the San Francisco Peaks. Occupied about 1200 A.D.

Sunset Crater Volcano, which last erupted in 1165 A.D.

Montezuma Castle National Monument. Misnamed, as early settlers mistook this 12th Century Sinaguan dwelling for an Aztec ruin.

Along the West Fork of Oak Creek Trail, near Sedona.

Along the West Fork of Oak Creek Trail, near Sedona.

Along the West Fork of Oak Creek Trail, near Sedona.

Along the Wilson Mountain Trail, north of Sedona.

Along the Wilson Mountain Trail, north of Sedona.

Along the Wilson Mountain Trail, north of Sedona.

Along the Wilson Mountain Trail, north of Sedona.

The view from Wilson Mountain, north of Sedona.

The view from Wilson Mountain. Sedona lies in the valley below.