Large cottonwood tree, Cañon de Chelle.

Distant view of Explorers column, Cañon de Chelle, about 900 ft. in height.

Distant view of Camp Apache.

Central portion of Cañon de Chelle, New Mexico.

Camp Beauty, Cañon de Chelle; walls 1,200 feet high, width of Cañon at this point about one fourth of a mile.

Explorers column, Cañon de Chelle, Arizona.

Kanab Wash, Colorado basin.

Tufa bank, Kanab Wash.

Limestone walls, Kanab Cañon.

Weathered sandstone, Kanab Wash.

Weathered sandstone, Kanab Wash.

Limestone walls, Kanab Wash

Kanab Wash. Colorado Basin

View across Apache Lake, Sierra Blanca Range.

Cooley's Park, Sierra Blanca Range.

Sand sculpture, Grand Cañon.

Lava cone, Devil's Hole, Arizona.

Perched rock, Rocker Creek, Arizona.

Chocolate mesa, Rocker Creek, Arizona.

Vermilion mesa, Rocker Creek, Arizona.

Mt. Range, near Castle Valley.

The "Vermillion cliff," a typical plateau edge, as seen from Jacobs Pool, Arizona.

Kanab Wash, Colorado basin.

Colorado River, below the Paria.

Colorado River, below the Paria.

Mt. Range, near Castle Valley.

Chocolate Butte; mouth of the Paria.

The northern wall of the Grand Cañon of the Colorado, near the foot of To-ro-weap valley.

The northern wall of the Grand Cañon of the Colorado, near the foot of To-ro-weap valley.

Grand Cañon of the Colorado.