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The view to the southeast from Point Sublime after sunset, North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Saguaro organ pipe cactus and prickly pear cactus, Saguaro National Monument, Tucson, Arizona, USA, North America
Aerial view of the South Rim, Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, USA, North America
Petroglyphs, created by the prehistoric Hohokam people, about 1000 years ago, West-Tucson Mountain District, Saguaro National Park, Arizona, United States of America, North America
Canyon de Chelly National Monument, Newspaper Rock Petroglyphs, Arizona, United States of America, North America
Rock formation known as Swirls on Colorado Plateau, Arizona, United States of America (U.S.A.), North America
Cactus silhouetted against lightning, Tucson, Arizona, United States of America (U.S.A.), North America
Cactus silhouetted against lightning, Tucson, Arizona, United States of America (U.S.A.), North America
Pillar of stone in Thin Lizy Canyon, a slot canyon, Arizona, United States of America (U.S.A.), North America
West Rim at sunrise, Grand Canyon, UNESCO World Heritage Site, Arizona, United States of America (U.S.A.), North America
West Rim, Grand Canyon, UNESCO World Heritage Site, Arizona, United States of America (U.S.A.), North America
Cactus silhouetted against lightning, Tucson, Arizona, United States of America (U.S.A.), North America
Sandstone Wave, Paria Canyon, Vermillion Cliffs Wilderness, Arizona, United States of America (U.S.A.), North America
View of Hoover Dam from the new Mike O'Callaghan-Pat Tillman Memorial Bridge, Arizona, United States of America, North America
View of Hoover Dam from the new Mike O'Callaghan-Pat Tillman Memorial Bridge, Arizona, United States of America, North America
Woman jogging, Monument Valley Navajo Tribal Park, Arizona Utah border, United States of America, North America
Woman stretching, Monument Valley Navajo Tribal Park, Arizona Utah border, United States of America, North America
The Mittens at dusk cast long shadows, Monument Valley Navajo Tribal Park, Utah and Arizona border, United States of America, North America
One of the Mittens at dusk casts a long shadow, Monument Valley Navajo Tribal Park, Utah and Arizona border, United States of America, North America
Returning on horseback, Grand Canyon, UNESCO World Heritage Site, Arizona, United States of America, North America
Decorative fountain in El Presidio Park, Tucson, Arizona, United States of America (U.S.A.), North America
Pallid bat (Antrozous pallidus) in flight, near Portal, Arizona, United States of America, North America
Totem Pole and Sand Springs, Monument Valley Tribal Park, Arizona, United States of America, North America
Tourist admiring the view from the South Rim, near Yavapai Point, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America (U.S.A.), North America
Gammage Auditorium, architect Frank Lloyd Wright, Arizona State University, Tempe, Greater Phoenix Area, Arizona, United States of America, North America
Jack Knife sculpture by Ed Mell, Main Street, Arts District, Scottsdale, Phoenix, Arizona, United States of America, North America
Jack Knife sculpture by Ed Mell, Main Street, Arts District, Scottsdale, Phoenix, Arizona, United States of America, North America
Pima County Courthouse and skyscrapers, Tucson, Pima County, Arizona, United States of America, North America
Saguaro cactus, Saguaro National Park, Tuscon Mountain District west unit, Tucson, Arizona, United States of America, North America
Saguaro cacti and barrel cacti in bloom, Saguaro National Park, Rincon Mountain District, Tucson, Arizona, United States of America, North America
Saguaro cacti and barrel cacti in bloom, Saguaro National Park, Rincon Mountain District, Tucson, Arizona, United States of America, North America
Chili peppers on adobe wall, Tubac, Greater Tucson Region, Arizona, United States of America, North America
Interior of church, Mission San Xavier del Bac, Tucson, Arizona, United States of America, North America
Desert Bighorn Sheep (Ovis canadensis nelsoni) ram in captivity exhibiting the Flehmen response, Arizona Sonora Desert Museum, Tucson, Arizona, United States of America, North America
Sonoran Desert Sidewinder (Sonoran Sidewinder) (Crotalus cerastes cercobombus) in captivity, Arizona Sonora Desert Museum, Tucson, Arizona, United States of America, North America
River Otter (Lutra canadensis) in captivity, resting and sucking on its tail, Arizona Sonora Desert Museum, Tucson, Arizona, United States of America, North America
Northern Mojave Rattlesnake (Crotalus scutulatus scutulatus) in captivity, Arizona Sonora Desert Museum, Tucson, Arizona, United States of America, North America
Sandstone formation under clouds, Coyote Buttes Wilderness, Vermillion Cliffs National Monument, Arizona, United States of America, North America
Ridges in sandstone under clouds, Coyote Buttes Wilderness, Vermillion Cliffs National Monument, Arizona, United States of America, North America
Layered sandstone column under clouds, Coyote Buttes Wilderness, Vermillion Cliffs National Monument, Arizona, United States of America, North America
Sandstone formation at dawn, Coyote Buttes Wilderness, Vermillion Cliffs National Monument, Arizona, United States of America, North America
Petrified Forest National Park, Blue Mesa, Blue Mesa Trail, sedimentary layers of bluish bentonite clay
Petrified logs from the late Triassic period, 225 million years ago, Long Logs Trail, Petrified Forest National Park, Arizona, United States of America, North America
Sedimentary layers of bluish bentonite clay with petrified wood, Blue Mesa Trail, Blue Mesa, Petrified Forest National Park, Arizona, United States of America, North America
Sedimentary layers of bluish bentonite clay, The Tepees, Petrified Forest National Park, Arizona, United States of America, North America
Petrified logs from the late Triassic period, 225 million years ago, Long Logs Trail, Petrified Forest National Park, Arizona, United States of America, North America
Petrified logs from the late Triassic period, 225 million years ago, Long Logs Trail, Petrified Forest National Park, Arizona, United States of America, North America
Petrified logs from the late Triassic period, 225 million years ago, Long Logs Trail, Petrified Forest National Park, Arizona, United States of America, North America
Petrified logs from the late Triassic period, 225 million years ago, Long Logs Trail, Petrified Forest National Park, Arizona, United States of America, North America
Agate Bridge, a petrified log spanning ravine, Petrified Forest National Park, Arizona, United States of America, North America
Sedimentary layers of bluish bentonite clay, Blue Mesa Trail, Blue Mesa, Petrified Forest National Park, Arizona, United States of America, North America
Close up of a common barn owl (Tyto Alba), West-Tucson Mountain District, Saguaro National Park, Arizona, United States of America, North America
Saguaro Cactus (Camegiea Gigantea), West-Tucson Mountain District, Saguaro National Park, Arizona, United States of America, North America
Petroglyphs, created by the prehistoric Hohokam people, about 1000 years ago, West-Tucson Mountain District, Saguaro National Park, Arizona, United States of America, North America
San Xavier del Bac Mission, founded in 1692, National Historic Landmark, Tohono O'odham San Xavier Indian Reservation, Arizona, United States of America, North America
Flowers of the Jumping Cholla cactus (Hanging Chain Cholla) (Cylindropuntia Fulgida), West-Tucson Mountain District, Saguaro National Park, Arizona, United States of America, North America
Saguaro Cactus (Camegiea Gigantea) silhouetted at sunset, West-Tucson Mountain District, Saguaro National Park, Arizona, United States of America, North America
Flower of the prickly pear cactus (Opuntia), West-Tucson Mountain District, Saguaro National Park, Arizona, United States of America, North America
Petroglyphs, created by the prehistoric Hohokam people, about 1000 years ago, West-Tucson Mountain District, Saguaro National Park, Arizona, United States of America, North America
San Xavier del Bac Mission, founded in 1692, National Historic Landmark, Tohono O'odham San Xavier Indian Reservation, Arizona, United States of America, North America
Teddy Bear Cholla cactus (Cylindropuntia Bigelovil), West-Tucson Mountain District, Saguaro National Park, Arizona, United States of America, North America
Casa Grande (Great House) Ruins National Monument, home to the Sonora Desert people, founded near 400 AD, abandoned about 1450 AD, Coolidge, Arizona, United States of America, North America
Cliff dwelling of Southern Sinagua farmers, built in the early 1100s CE (Common Era), a five storey, 20 room structure, Montezuma Castle National Monument, Arizona, United States of America, North America
Cliff dwelling of Southern Sinagua farmers, built in the early 1100s CE (Common Era), a five storey, 20 room structure, Montezuma Castle National Monument, Arizona, United States of America, North America
Casa Grande (Great House) Ruins National Monument, home to the Sonora Desert people, founded near 400 AD, abandoned about 1450 AD, Coolidge, Arizona, United States of America, North America
Lomaki Pueblo, inhabited from approximately 1100 AD to 1250 AD, Wupatki National Monument, Arizona, United States of America, North America
A cowboy wrangler leads a pack train of horses up the South Kaibab Trail in Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Hikers descend the curving South Kaibab trail in Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America