Great Sand Dunes National ParkBadwater Basin, Death Valley National ParkMesquite Dunes, Death Valley National ParkRocky Mountain National Park, COSan Juan National Forest, COBig Morongo Canyon Preserve, CAValley of the Gods, UtahGold Butte, NVHawai'i Volcanoes National Park, HIAdobe Badlands, COBears Ears National Monument, UTYosemite National Park, CAWeminuche Wildermess, COUncompahgre National Forest, CO