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Grand Canyon viewed before sunset, west of Papago Point, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Hiking to the Puebloan granaries at Upper Nankoweap, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Night photography at South Canyon, just before river mile 32, Grand Canyon National Park, Arizona, United States of America, North America

A hoodoo in Angels Garden at Petrified Forest, shaped like a dragon's head, Arizona, United States of America, North America

Looking south from Cape Royal on the North Rim at dawn, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Angels Window at Cape Royal on the North Rim of Grand Canyon at sunrise, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Glen Canyon Dam on the Colorado River in northern Arizona with Lake Powell in the background, Arizona, United States of America, North America

View of Yuma Point from Hermit Trail in winter at Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

A Mexican jay (Aphelocoma wollweberi), in a tree in the Chiricahua National Monument, Arizona, United States of America, North America

Adult male plateau fence lizard (Sceloporus tristichus), north rim of Grand Canyon National Park, Arizona, United States of America, North America

An adult common side-blotched lizard (Uta stansburiana), on the rocks in Grand Canyon National Park, Arizona, United States of America, North America

The White House, cliff dwellings, in the Canyon de Chelly in Arizona, United States of America, North America

Sunset over the south rim of the Grand Canyon, UNESCO World Heritage Site, Arizona, United States of America, North America

A beavertail pkicklypear cactus (Opuntia basilaris), in bloom at Thong Chul, Tucson, Arizona, United States of America, North America

Organ pipe cactus (Stenocereus thurberi), Organ Pipe Cactus National Monument, Sonoran Desert, Arizona, United States of America, North America

An adult bridled titmouse (Baeolophus wollweberi), Madera Canyon, southern Arizona, Arizona, United States of America, North America

The Paria River flowing through Paria Canyon in the Glen Canyon Recreation Area, Arizona, United States of America, North America

View of the south side of Johnson Point from below its cliffs at Marble Canyon, Glen Canyon Recreation Area, Arizona, United States of America, North America

Monument Valley at sunrise, Monument Valley Tribal Park, Arizona, United States of America, North America

A view of the upper Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Whitmore Canyon from the helicopter, just before river mile 187, Grand Canyon National Park, Arizona, United States of America, North America

Angels Window Overlook on North Rim of Grand Canyon at sunrise, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Desert view point over the Grand Canyon, UNESCO World Heritage Site, Arizona, United States of America, North America

Sunset over the south rim of the Grand Canyon, UNESCO World Heritage Site, Arizona, United States of America, North America

Saguaro cactus (Carnegiea gigantea), photographed at sunrise in the Sweetwater Preserve, Tucson, Arizona, United States of America, North America

Mount Hayden from Point Imperial, north rim, Grand Canyon, Arizona, United States of America, North America

Mount Hayden from Point Imperial, north rim, Grand Canyon, Arizona, United States of America, North America

Sunset over Grand Canyon South Rim, UNESCO World Heritage Site, Arizona, United States of America, North America

View from Cape Royal, North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

View of Tunnel Canyon in Canyon De Chelly from just west of Tseyi Overlook, Arizona, United States of America, North America

Backlight of the cliffs of the Grand Canyon, UNESCO World Heritage Site, Arizona, United States of America, North America

An adult desert collared lizard (Crotaphytus bicinctores), basking in Grand Canyon National Park, Arizona, United States of America, North America

Eroded curves in sandstone, Upper Antelope Canyon, near Page, Arizona, United States of America, North America

Left and Right Mittens, Monument Valley Navajo Tribal Park, Arizona, United States of America, North America

Mount Hayden from Point Imperial, north rim, Grand Canyon, Arizona, United States of America, North America

View of Cottonwood Canyon in Canyon De Chelly west of the Tseyi Overlook, Arizona, United States of America, North America

Cowboy riding a horse rounding up cattle for branding in Arizona, United States of America, North America

Tourists on horseback returning from trekking in the Grand Canyon, UNESCO World Heritage Site, Arizona, United States of America, North America

The deep gorge of the Colorado River on the west rim of the Grand Canyon, UNESCO World Heritage Site, Arizona, United States of America, North America

Dead tree in the desert landscape with rock formations and cliffs in the background in Monument Valley, Arizona, United States of America, North America

Straight road heading for Monument Valley, Navajo Reserve, on border of Arizona and Utah, United States of America, North America

The Grand Canyon at sunset from the South Rim, UNESCO World Heritage Site, Arizona, United States of America, North America

Glen Canyon Dam, concrete arch 180m high, 475m long, retaining Lake Powell on the Colorado River, Arizona, United States of America, North America

Hikers return from Canyon base, Grand Canyon, UNESCO World Heritage Site, Arizona, United States of America, North America

Long exposure of star trails in night sky, Monument Valley Navajo Tribal Park, Arizona Utah border, United States of America, North America

Earthquake fault line in roadcut, Interstate 40, Kingman, Arizona, United States of America, North America

Old truck, Historic Cool Springs Gas Station, Route 66, Arizona, United States of America, North America

Rock strata in cliffs in Paria River Valley, Grand Staircase-Escalante National Monument, near Page, Arizona, United States of America, North America

El Paso Sheriff's Posse, Tucson Rodeo Parade, Tucson, Arizona, United States of America, North America

Hubbell Trading Post National Historic Site, original covered wagon, Arizona, United States of America, North America

Rancher's Fireweed (Devil's Lettuce) (Common Fiddleneck) (Rancher's Fiddleneck) (Amsinckia menziesii var. intermedia), Organ Pipe Cactus National Monument, Arizona, United States of America, North America

Purple Owl's Clover (Exserted Indian Paintbrush) (Escobita) (Castilleja exserta), Organ Pipe Cactus National Monument, Arizona, United States of America, North America

Great horned owl (Bubo virginianus) in captivity, Arizona Sonora Desert Museum, Tucson, Arizona, United States of America, North America

Speckled rattlesnake (Crotalus mitchellii) in captivity, Arizona Sonora Desert Museum, Tucson, Arizona, United States of America, North America

Western screech-owl (Megascops kennicottii) in captivity, Arizona Sonora Desert Museum, Tucson, Arizona, United States of America, North America

Speckled rattlesnake (Crotalus mitchellii) in captivity, Arizona Sonora Desert Museum, Tucson, Arizona, United States of America, North America

Great horned owl (Bubo virginianus) in captivity, Arizona Sonora Desert Museum, Tucson, Arizona, United States of America, North America

Mojave rattlesnake (Mohave Rattlesnake) (Mojave Diamond Rattlesnake) (Desert Diamond Back) (Crotalus scutulatus) in captivity, Arizona Sonora Desert Museum, Tucson, Arizona, United States of America, North America

Hypomelanistic Western diamond-back rattlesnake (Western diamondback rattlesnake) (Crotalus atrox) in captivity, Arizona Sonora Desert Museum, Tucson, Arizona, United States of America, North America

The Redwall Cavern, a giant cave in the walls of the Grand Canyon, seen while rafting down the Colorado River, Grand Canyon, Arizona, United States of America, North America

Adult captive coyote (Canis latrans) at the Arizona Sonora Desert Museum, Tucson, Arizona, United States of America, North America

Adult captive coatimundi (Nasua nasua) at the Arizona Sonora Desert Museum, Tucson, Arizona, United States of America, North America

John Ford's Point and the Three Sisters and cowboy on horse, Monument Valley, border of Arizona and Utah, United States of America, North America

Harley Davidson motorcycle and Historic building on Route 66, Kingman, Arizona, United States of America, North America

Caliche walls made from limy subsoil, not adobe, dating from 14th century, Casa Grande, Hohokam Indians, Arizona, United States of America (U.S.A.), North America.

Vortex Sculpture by Alexander Calder, Phoenix Museum of Art, Phoenix, Arizona, United States of America, North America

Speckled rattlesnake (Crotalus mitchellii) in captivity, Arizona Sonora Desert Museum, Tucson, Arizona, United States of America, North America

Adult captive desert tortoise (Gopherus agassizii) at sunset at the Arizona Sonora Desert Museum, Tucson, Arizona, United States of America, North America

Taliesin West, personal home of Frank Lloyd Wright, near Phoenix, Arizona, United States of America, North America

Desert landscape with rock formations in Monument Valley, Arizona, United States of America, North America

Vulcan's Throne, the west rim, above the Colorado River, Grand Canyon, UNESCO World Heritage Site, Arizona, United States of America (USA), North America

Taliesin West, Frank Lloyd Wright's winter home, Scottsdale, Arizona, United States of America, North America

Eroded rocks under an overcast stormy sky, the Painted Desert, Arizona, United States of America (USA), North America

Grand Canyon star gazing, Grand Canyon, UNESCO World Heritage Site, Arizona, United States of America, North America

Intertribal Greeting by Doug Hyde, Heard Museum, Phoenix, Arizona, United States of America, North America

Gordon's Bladderpod (Lesquerella gordonii), Organ Pipe Cactus National Monument, Arizona, United States of America, North America

Fairy Duster (Calliandra eriophylla), Organ Pipe Cactus National Monument, Arizona, United States of America, North America