Western Sonoran + Colorado Desert, California
Yellowstone National Park
Yellowstone National Park
Moab, Arches + La Sal Mountains, Utah
Mount Lassen Volcanic Area, California
San Gabriel + San Bernardino Mountains, California
Yellowstone, Wyoming
Mount St. Helens National Volcanic Monument
Yellowstone National Park
Zion + Bryce Canyon Area, Utah
San Diego
Death Valley, California