Geographical Surveys West of the 100th Meridian (U.S.)

The "Vermillion Cliff," a typical plateau edge, as seen from Jacob's Pool, Arizona.

The northern wall of the Grand Cañon of the Colorado, near the foot of the To-Ro-Weap Valley.

The northern wall of the Grand Cañon of the Colorado, near the foot of the To-Ro-Weap Valley.

The northern wall of the Grand Cañon of the Colorado, near the foot of the To-Ro-Weap Valley.

The northern wall of the Grand Cañon of the Colorado, near the foot of the To-Ro-Weap Valley.

Marble Cañon, one of the gorges of the Colorado here, 1,200 feet deep.

Marble Cañon, one of the gorges of the Colorado here, 1,200 feet deep.

Marble Cañon, one of the gorges of the Colorado here, 1,200 feet deep.

Marble Cañon, one of the gorges of the Colorado here, 1,200 feet deep.

View in the Grand Cañon of the Colorado River.

View in the Grand Cañon of the Colorado River.

View of cañon.

Mouth of the Paria, Colorado River; walls 2,100 feet in height.

Mouth of the Paria, Colorado River; walls 2,100 feet in height.

Mouth of the Paria, Colorado River; walls 2,100 feet in height.

The mouth of Kanab Creek.

"The Bath," a dripping spring in Kanab Cañon. Temperature 69° Fahr.

The mouth of Kanab Creek.

"The Bath," a dripping spring in Kanab Cañon. Temperature 69° Fahr.

"The Bath," a dripping spring in Kanab Cañon. Temperature 69° Fahr.

The Cañon of Kanab Creek, near its junction with the Grand Cañon of the Colorado.

The Cañon of Kanab Creek, near its junction with the Grand Cañon of the Colorado.

The Cañon of Kanab Creek, near its junction with the Grand Cañon of the Colorado.

The Cañon of Kanab Creek, near its junction with the Grand Cañon of the Colorado.

Mountain transportation. Pack mule, pack, and packers.

Mountain transportation. Pack mule, pack, and packers.

Mountain transportation. Pack mule, pack, and packers.

Mountain transportation. Pack mule, pack, and packers.

Mountain transportation. Pack mule, pack, and packers.

View of Grand Cañon walls, near mouth of Diamond River.