Sand Dunes

Glamis, California

Dunes of ancient Lake Cahuilla

Off highway vehicles moving across the dunes

Late evening at Glamis

OHV motion at Glamis at night

Imperial Sand Dunes, Southern California

Southern California

The surface of the Colorado Desert here is paved by pebbles and cobbles that the wind does not blow away.

An area in Southern California

The remains of an ancient lake that existed here in the Pleistocene, continued during the Holocene, and only ceased to exist about 400 years before present. It was the ancient predecessor of the Salton Sea, which is an accidental lake formed by a failed dike that partially filled the dry-lake-bed depression. The lake at one time covered 2,200 square miles (5,700 km2). As climate gradually warmed over the past 2 million years, the lake has dried up.

Moving vehicles at dusk

Enjoying the desert