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Various hoodoos in Angels Garden at Petrified Forest National Park, Arizona, United States of America, North America

White, tan, and red sandstone butte, White Pocket, Vermilion Cliffs National Monument, Arizona, United States of America, North America

Pylons and moon, Navajo Generating Station, near Lake Powell and Antelope Canyon, Arizona, United States of America, North America

One of the few petrified trees almost intact, The Onyx Bridge in Petrified Forest National Park, Arizona, United States of America, North America

One of the few petrified trees almost intact, The Onyx Bridge in Petrified Forest National Park, Arizona, United States of America, North America

An overhead view of a slot canyon in the south fork of Soap Creek Canyon at Marble Canyon, Arizona, United States of America, North America

Coronado Butte at Grand Canyon viewed from the end of Coronado Ridge, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Mexican jay (Aphelocoma ultramarina), Chiricahuas, Coronado National Forest, Arizona, United States of America, North America

Female northern cardinal (Cardinalis cardinalis), The Pond, Amado, Arizona, United States of America, North America

Male gila woodpecker (Melanerpes uropygialis), The Pond, Amado, Arizona, United States of America, North America

The sun rising at Grand Canyon North Rim, viewed from the Angels Window Overlook at Cape Royal, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Junction sign for the trails leading to Angels Window and Cape Royal at Grand Canyon North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Wooden sign marking the way to Roosevelt Point on the North Rim of Grand Canyon, Arizona, United States of America, North America

Bright Angel Point Bridge on Grand Canyon North Rim at twilight, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Woman sitting on the cliff of the desert view point over the Grand Canyon, UNESCO World Heritage Site, Arizona, United States of America, North America

Sandstone formations with clouds, Coyote Buttes Wilderness, Vermilion Cliffs National Monument, Arizona, United States of America, North America

Western Grebe (Aechmophorus occidentalis) swimming, Tonto National Forest, Arizona, United States of America, North America

A young red-tailed hawk (Buteo jamaicensis), on a sign near Whitewater Draw, Coronado National Forest, Arizona, United States of America, North America

Organ pipe cactus (Stenocereus thurberi), at night in Organ Pipe Cactus National Monument, Sonoran Desert, 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

A view of Arizona's Canyon De Chelly from its south rim, Arizona, United States of America, North America

Panorama of Marble Canyon viewed from Johnson Point below the Vermilion Cliffs, Glen Canyon Recreation Area, Arizona, United States of America, North America

From Pima Point, South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Wotans Throne in moonlight, Grand Canyon North Rim, Grand Canyon, Arizona, United States of America, North America

Sunset from the south rim of the Grand Canyon at Shoshone Point, UNESCO World Heritage Site, Arizona, United States of America, North America

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

Thunderstorms over south rim, from Cape Royal, north rim, Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Sky Walk over the Grand Canyon and Colorado River, UNESCO World Heritage Site, Arizona, United States of America, North America

Shooting the rapids in a raft on the Colorado River, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Shooting rapids in a kayak on the Colorado River, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Ancestral Puebloan ruin at Desert View on the Colorado River, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Ancestral Puebloan ruin at Desert View on the Colorado River, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Panorama of a ridge in the Devil's Playground of crumbling hoodoos, Petrified Forest National Park, Arizona, United States of America, North America

Grandview Point viewed from the port bow of the formation called Sinking Ship, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

The North Fork Abyss of the Lower Soap Creek Canyon joining the confluence of the South Fork in Marble Canyon, Arizona, United States of America, North America

A deep dropoff at Grand Canyon called Loki's Abyss east of Thor's Hammer Overlook, with Loki's Rock just right of center, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

A hiker watching the sun go down west of Moran Point at Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, 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

Glen Canyon Dam viewed from main overlook just south of dam, Page, Arizona, United States of America, North America

An adult desert spiny lizard (Sceloporus magister), Brandi Fenton Park, Tucson, Arizona, United States of America, North America

The red water of Lithodendron Wash, red from bentonite clay, in Petrified Forest National Park, Arizona, United States of America, North America

Zuni Point at Grand Canyon South Rim in the clouds viewed from Moran Point, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Sandstone formations, White Pockets, Paria Plateau, Northern Arizona, United States of America, North America

View from North Window, Monument Valley Tribal Park, Arizona, United States of America, North America

Cliffs at sunset, Paria Movie Set, Grand Staircase-Escalante National Monument, near Page, Arizona, United States of America, North America

Male broad-billed hummingbird (Cynanthus latirostris) in flight, Madera Canyon, Coronado National Forest, Arizona, United States of America, North America

Red rock formations at sunrise, Coconino National Forest, Arizona, United States of America, North America

Lucy's warbler (Vermivora luciae), The Pond, Amado, Arizona, United States of America, North America

Male pyrrhuloxia (Cardinalis sinuatus), The Pond, Amado, Arizona, United States of America, North America

The summit of Tritle Peak off Roosevelt Point on Grand Canyon North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

View of Brady Peak from the Vista Encantada Picnic area on Grand Canyon North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Mitten at dusk lit by late evening sun, Monument Valley Navajo Tribal Park, Utah Arizona border, United States of America, North America

Sandstone formations with clouds, Coyote Buttes Wilderness, Vermilion Cliffs National Monument, Arizona, United States of America, North America

Sandstone formations, Coyote Buttes Wilderness, Vermilion Cliffs National Monument, Arizona, United States of America, North America

Mittens at dusk, late evening sun lights the desert floor, Monument Valley Navajo Tribal Park, Utah Arizona border, United States of America, North America

An juvenile acorn woodpecker (Melanerpes formicivorous), Madera Canyon, southern Arizona, Arizona, United States of America, North America

Purple loops in sandstone, Coyote Buttes Wilderness, Vermilion Cliffs National Monument, Arizona, United States of America, North America

Panorama 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

West Rim, Grand Canyon and Colorado River, UNESCO World Heritage Site, Arizona, United States of America, North America

Sky Walk over the Grand Canyon and Colorado River, UNESCO World Heritage Site, Arizona, United States of America, North America

Sandstone buttes in Monument Valley Navajo Tribal Park on the Arizona-Utah border, United States of America, North America

A winter sunrise view of Grand Canyon Arizona from Bright Angel Trail on the South Rim just past the second tunnel, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Rafters on the Colorado River through the Grand Canyon, Arizona, United States of America, North America

View from South Rim at sunrise, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

A giant petrified log on the Purple Peninsula in Petrified Forest National Park, Arizona, United States of America, North America

Grand Canyon northwest view from a rock island just beyond the tourist overlook of Lipan Point, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Ancient Indian Ruins on the edge of a cliff east of Papago Point at Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, 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

Commercial rafters run the Lava Falls Rapid, just before river mile 180, Grand Canyon National Park, Arizona, United States of America, North America

An adult male desert spiny lizard (Sceloporus magister), under a ledge in Grand Canyon National Park, Arizona, United States of America, North America

Commercial rafters run the Deubendorff Rapid, just past river mile 132, Grand Canyon National Park, Arizona, United States of America, North America

View of Tiponi Gap in the distance from the dry cliff of Tiponi Gap Falls in Petrified Forest National Park Arizona.

East view of Canyon De Chelly National Monument North Rim from Antelope House Overlook, left fork leads to Many Cherry Canyon, right fork to Black Rock Canyon, Arizona, United States of America, North America

Caves in the cliff walls, used to store food by ancient Anasazi Indians, Canyon De Chelly National Monument, Arizona, United States of America, North America

Panorama view of the Junction between the north and south forks of Canyon De Chelly National Monument, with Dog Rock rock formation on the far left, Arizona, United States of America, North America

A lone hoodoo on the edge of Angels Garden in Petrified Forest, Arizona, United States of America, North America

Colorado River dividing California and Arizona, near Parker, Arizona, United States of America, North America

The South Kaibab Trail winding down to the Black Bridge that spans the Colorado River at Grand Canyon Arizona. Phantom Ranch is just left of center.

Petrified wood and an eroded hill, Petrified Forest National Park, Arizona, United States of America, North America

View from the summit of Squared Off Butte along the Onyx Trail in Petrified Forest National Park, Arizona, United States of America, North America

Grand Canyon North Rim viewed from Roosevelt Point with Tritle Peak on the left and Atoko Point on the right, Gand Canyon, Arizona, United States of America, North Amerca

An overlook along the Transept Trail at Grand Canyon North Rim at twilight, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Sign marking the Nankoweap Trail for the Saddle Mountain Wilderness that borders Grand Canyon National Park, Arizona, United States of America, North America

A grove of trembling aspens (Populus tremuloides), in fall coloration near Snowbowl, Flagstaff, Arizona, United States of America, North America

An adult male broad-billed hummingbird (Cynanthus latirostris magicus), Madera Canyon, southern Arizona, Arizona, United States of America, North America

An adult white-nosed coati (Nasua narica), at the Santa Rita Lodge in Madera Canyon, southern Arizona, Arizona, United States of America, North America