Saguaro covered mountains near Gates Pass, Tucson, Arizona

Organ Pipe National Monument, Arizona

Coyote Buttes, Arizona

Saguaro National Park, Arizona

Saguaro National Park, Arizona

Saguaro National Park, Arizona

Coyote Buttes, Arizona

Organ Pipe National Monument, Arizona

Saguaro National Park, Arizona

Saguaro National Park, Arizona

Saguaro National Park, Arizona

Coyote Buttes, Arizona

Saguaro National Park, Arizona

Coyote Buttes, Arizona

Organ Pipe National Monument, Arizona

Saguaro National Park, Arizona

Organ Pipe National Monument, Arizona

Coyote Buttes, Arizona

Coyote Buttes, Arizona

Organ Pipe National Monument, Arizona

Coyote Buttes, Arizona

Organ Pipe National Monument, Arizona

Coyote Buttes, Arizona

Organ Pipe National Monument, Arizona

Coyote Buttes, Arizona

Coyote Buttes, Arizona

Coyote Buttes, Arizona

Coyote Buttes, Arizona

Coyote Buttes, Arizona

Coyote Buttes, Arizona

Saguaro National Park, Arizona

Coyote Buttes, Arizona

Coyote Buttes, Arizona

Coyote Buttes, Arizona

Coyote Buttes, Arizona

Death Valley National Park, California

Death Valley National Park, California

Stove Pipe Wells in Death Valley National Park, California

Death Valley National Park, California

Joshua Tree National Park, California

Joshua Tree National Park, California

Death Valley National Park, California

Joshua Tree National Park, California

Stove Pipe Wells in Death Valley National Park, California

Death Valley National Park, California

Death Valley National Park, California

Joshua Tree National Park, California

Death Valley National Park, California

Death Valley National Park, California; the lowest point in the United States (-282 ft below sea level)

Death Valley National Park, California

Death Valley National Park, California

Death Valley National Park, California

Death Valley National Park, California

Stove Pipe Wells in Death Valley National Park, California

Joshua Tree National Park, California

Stove Pipe Wells in Death Valley National Park, California

Mojave National Preserve, California

Death Valley National Park, California

Death Valley National Park, California

Death Valley National Park, California

Death Valley National Park, California

Mojave National Preserve, California

Death Valley National Park, California

Death Valley National Park, California

Death Valley National Park, California

Joshua Tree National Park, California

Joshua Tree National Park, California

Red Rock National Conservation Area, near Las Vegas, Nevada

Red Rock National Conservation Area, near Las Vegas, Nevada

Red Rock National Conservation Area, near Las Vegas

Red Rock National Conservation Area, near Las Vegas, Nevada

Valley of Fire State Park, near Las Vegas, Nevada

Bryce Canyon National Park, Utah

Arches National Park, Utah

Zion National Park, Utah

Capitol Reef National Park, Utah

Bryce Canyon National Park, Utah

Zion National Park, Utah

Canyonlands National Park (Islands in the Sky district), Utah

Arches National Park, Utah

Arches National Park, Utah

Bryce Canyon National Park, Utah

Capitol Reef National Park, Utah

Capitol Reef National Park, Utah

Arches National Park, Utah

Zion National Park, Utah

Capitol Reef National Park, Utah

Bryce Canyon National Park, Utah

Bryce Canyon National Park, Utah

Bryce Canyon National Park, Utah

Canyonlands National Park (Islands in the Sky district), Utah

Bryce Canyon National Park, Utah

Bryce Canyon National Park, Utah

Canyonlands National Park (The Maze district), Utah

Canyonlands National Park (Islands in the Sky district), Utah

Capitol Reef National Park, Utah

Capitol Reef National Park, Utah

Bryce Canyon National Park, Utah

Bryce Canyon National Park, Utah

Bryce Canyon National Park, Utah

Bryce Canyon National Park, Utah

Canyonlands National Park (The Maze district), Utah

Canyonlands National Park (The Maze district), Utah

Bryce Canyon National Park, Utah

Canyonlands National Park (Islands in the Sky district), Utah

Bryce Canyon National Park, Utah

Cedar Breaks National Monument, Utah

Arches National Park, Utah

Canyonlands National Park (The Maze district), Utah