View across Apache Lake, Sierra Blanca Range.

Perched rock, Rocker Creek, Arizona.

Chocolate mesa, Rocker Creek, Arizona.

Vermilion mesa, Rocker Creek, Arizona.

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

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.

Cross-bedded sandstone, Kanab, Utah.

Mt. Range; Castle Valley in distance.

Cross-bedded sandstone, Kanab, Utah.

Cross-bedded sandstone, Kanab, Utah.

Cross-bedded sandstone, Kanab, Utah.

Cross-bedded sandstone, Kanab, Utah.

Weathered limestone, Grass Valley, Utah.

Non-conformable Strata, Salina Cañon, Utah.