Sand dunes with hail at Great Sand Dunes National Monument, Colorado

Death Valley National Park, California.

Death Valley National Park, California.

Death Valley National Park, California.

Death Valley National Park, California.

Death Valley National Park, California.

Death Valley National Park, California.

White Sands National Monument, New Mexico.

White Sands National Monument, New Mexico.

White Sands National Monument, New Mexico.

White Sands National Monument, New Mexico.

Collared lizard, Butler Wash, Utah.

Collared lizard, Fruita, Colorado.

Heart-shaped cactus paddle, Organ Pipe National Monument, Arizona

Flowers on the sand, Coyote Buttes, Arizona.

Cinder hills, San Francisco Volcanic Field, Arizona.

Desert camping, Great Basin, Nevada.

Desert art, Sedona, Arizona.