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Including parks in Southern California, Nevada, and parts of Utah, Arizona, and New Mexico
Capulin Volcano National Monument
Carlsbad Caverns National Park
Carrizo Plain National Monument
Death Valley National Park
El Malpais National Monument
Great Basin National Park
Golden Spike National Historic Park
Joshua Tree National Park
Lake Mead National Recreation Area
Mojave National Preserve
Pinnacles National Park
Saguaro National Park