Tim Fitzharris / Full moon setting over Zabriskie Point, morning, Death Valley National Park, California

Tim Fitzharris / Opuntia (Opuntia sp) in Chihuahuan Desert landscape, Big Bend National Park, Texas

Tim Fitzharris / 750 foot tall sand dunes, tallest in North America, Great Sand Dunes National Monument, Colorado

Tim Fitzharris / Sand dunes and the Mittens, Monument Valley Navajo Tribal Park, Arizona

Jim Brandenburg / Mexican Golden Poppy (Eschscholzia glyptosperma) field with Saguaro (Carnegiea gigantea) cactus, Organ Pipe Cactus National Monument, Arizona

Jim Brandenburg / Mexican Golden Poppy (Eschscholzia glyptosperma) field with Saguaro (Carnegiea gigantea) cactus, Organ Pipe Cactus National Monument, Arizona

Jim Brandenburg / Mexican Golden Poppy (Eschscholzia glyptosperma) field, Organ Pipe Cactus National Monument, Arizona

Yva Momatiuk & John Eastcott / Dry cracked mud on river bank in desert, San Juan River, Utah

Yva Momatiuk & John Eastcott / Sandstone buttes, ravines, and boulders in arid desert, Grand Staircase-Escalante National Monument, Utah

Yva Momatiuk & John Eastcott / Sandstone rock formations, Vermillion Cliffs National Monument, Arizona

Yva Momatiuk & John Eastcott / Sand dunes, Death Valley National Park, California

Yva Momatiuk & John Eastcott / Hikers on salt flat, Death Valley National Park, California