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View of the formation called Duck On A Rock in the afternoon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

The Vermilion Cliffs adjacent to Glen Canyon Recreation Area viewed from the plateau at the end of Spencer Trail in Marble Canyon with Lee's Ferry on the lower left with the Colorado River, Arizona, United States of America, North America

Sandstone pillars bathed in golden evening light, Monument Valley Navajo Tribal Park, border of Utah and 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

Grand Canyon view from Skeleton Point along the South Kaibab Trail on the south rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Grand Canyon, near Grandview Point, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Grand Canyon, Mohave Point, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

A rock spire sculpted by the wind on Crystal Mesa west of Hamilili Point in Petrified Forest National Park, Arizona, United States of America, North America

Male magnificent hummingbird (Eugenes fulgens) in flight, Chiricahuas, Coronado National Forest, Arizona, United States of America, North America

Male lesser goldfinch (Carduelis psaltria), Patagonia-Sonoita Creek Preserve, Patagonia, Arizona, United States of America, North America

Giant saguaro cactus (Carnegiea gigantea), under full moon in the Catalina Mountains, Tucson, Arizona, United States of America, North America

Giant saguaro cactus (Carnegiea gigantea), under full moon in the Catalina Mountains, Tucson, Arizona, United States of America, North America

An Indian dwelling in Petrified Forest National Park called the Agate House, built between 1030AD and 1300AD, Arizona, United States of America, North America

An island of rock just off the Billings Gap Trail at Petrified Forest National Park, Arizona, United States of America, North America

Strangely shaped granite rocks along a trail in Constellation Park called Hole in the Wall, Prescott, Arizona, United States of America, North America

A late night lightning storm in Arlington during the 2012 Monsoon season, Arizona, United States of America, North America

Eastern Mitten Ridge viewed from the Cow Pies section of Hangover Trail in Sedona, Arizona, United States of America, North America

Adult javalina (collared peccary) (Pecari tajacu) in the Sonoran Desert suburbs of Tucson, Arizona, United States of America, North America

Giant saguaro cactus (Carnegiea gigantea) at night in the Sweetwater Preserve, Tucson, Arizona, United States of America, North America

Sunrise on saguaro cactus in bloom (Carnegiea gigantea), Sweetwater Preserve, Tucson, Arizona, United States of America, North America

Lights and shadows in Upper Antelope Canyon, Navajo Tribal Park, Arizona, United States of America, North America

View of a small cove near the end of Lake Shore Trail in Watson Lake at Prescott, Arizona, United States of America, North America

The road leading up to Monument Valley Navajo Tribal Park on the Arizona-Utah border, 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

The road leading up to Monument Valley Navajo Tribal Park on the Arizona-Utah border, 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

View of Cathedral Rock in Sedona from the HiLine Trail Vista, Arizona, United States of America, North America

The west rock ridge of the New Wave along the Beehive Trail in the Glen Canyon Recreation Area near Page, Arizona, United States of America, North America

View from the top of the Shiva Nandi Rock along the Beehive Trail on the west ridge of the New Wave in the Glen Canyon Recreation Area near Page, Arizona, United States of America, North America

Panorama view of Sedona from the Schnebly Hill Vista at midday, Arizona, United States of America, North America

The second tunnel along Bright Angel Trail in winter at sunrise on the South Rim of Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Formation in the Petrified Forest National Park called a Teepee, Arizona, United States of America, North America

Tourists explore a slot canyon in Upper Antelope Canyon, Navajo Land, Arizona, United States of America, North America

The eastern edge of the Clam Bed Mesa along the Red Basin Trail in Petrified Forest National Park, Arizona, United States of America, North America

A rock formation called Agate Mesa, Petrified Forest National Park, Arizona, United States of America, North America

The northeast side of Keyhole Mesa in the First Forest of Petrified Forest National Park, Arizona, United States of America, North America

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

A long formation of purple Bentonite clay called the Purple Peninsula, in Petrified Forest National Park, Arizona, United States of America, North America

Panorama of the Colorado River just north of Lee's Ferry in the Glen Canyon Recreation Area, Arizona, United States of America, North America

South side of Damnation Mesa on the north end of Devil's Playground in Petrified Forest National Park, Arizona, United States of America, North America

The desolate Hellscape of Devil's Playground in Petrified Forest National Park, Arizona, United States of America, North America

Ancient Indian petroglyphs on a boulder near Martha's Butte in Petrified Forest National Park Arizona.

Ancient Indian petroglyphs on a boulder near Martha's Butte in Petrified Forest National Park Arizona.

A petrified tree stump along the east rim of Tiponi Valley in Petrified Forest National Park Arizona.

A large storm rolling into Grand Canyon near Grandview Point during the 2022 Monsoon season, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

A wavy sandstone hill, a fossilized sand dune, at Ferry Swale in the Glen Canyon Recreation Area near Page, Arizona, United States of America, North America

A wavy sandstone hill, a fossilized sand dune, at Ferry Swale in the Glen Canyon Recreation Area near Page, Arizona, United States of America, North America

A narrow canyon running between several rock islands at Ferry Swale in the Glen Canyon Recreation Area near Page, Arizona, United States of America, North America

An outcrop of rock overlooking the Bright Angel Trail below at Grand Canyon South Rim off Hermit Road, Grand Canyon, UNESCO World Heritage Site, Arizona, United States of America, North America

The paved rim trail along the cliffs of Grand Canyon South Rim between the Trailview Overlook East Vista and the West Vista, Grand Canyon, UNESCO World Heritage Site, Arizona, United States of America, North America

A sign in different languages warning of a dangerous cliff at the West Vista of the Trailview Overlook along the Hermit Road rim trail, Grand Canyon, UNESCO World Heritage Site, Arizona, United States of America, North America

A look back towards the south from the end of the Maricopa Point Overlook, Grand Canyon, UNESCO World Heritage Site, Arizona, United States of America, North America

Historic Hermits Rest, built in 1914, owned by the National Park Service, Grand Canyon, Arizona, United States of America, North America

An ocean of fog rolling across the town of Chino Valley just as the sun is rising behind Mingus Mountain on a winter morning, Arizona, United States of America, North America

The very rocky pathway of the unmaintained Hermit Canyon Trail at Grand Canyon in winter with Waldron Canyon on the left in the distance, Grand Canyon, Arizona, United States of America, North America

Closeup of the historic Agate House in Petrified Forest National Park, Arizona, United States of America, North America

The crumbling cliffs of a mesa near Hamilili Point on the south end of Petrified Forest National Park, Arizona, United States of America, North America

Crumbling islands of rock near Hamilili Point in Petrified Forest, Arizona, United States of America, North America

View of Grand Canyon and a rock spire from within a gap between a stack of balanced boulders at Grandview Point, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Lightning striking the Desert View Watchtower on Grand Canyon South Rim during the 2023 Arizona Monsoon season, viewed from Navajo Point, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Swirl in white and salmon sandstone at dawn, White Pocket, Vermilion Cliffs National Monument, Arizona, United States of America, North America

Tse Bighanilini Slot Canyon (Upper Antelope Canyon), carved sandstone formations, Antelope Canyon, Arizona, United States of America, North America

Pleasant Valley looking south illuminated by moonlight, Grand Canyon North Rim, Arizona, United States of America, North America

View from the summit of Crystal Mesa west of Hamilili Point in Petrified Forest National Park, Arizona, United States of America, North America

Yuma antelope squirrel (Harris's antelope squirrel) (Ammospermophilus harrisii), Chiricahuas, Coronado National Forest, Arizona, United States of America, North America

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

Cliffs of Sycamore Falls with dry inactive waterfalls, Kaibab National Forest near Williams, Arizona, United States of America, North America

Male house finch (Carpodacus mexicanus), The Pond, Amado, Arizona, United States of America, North America

Flower of the Escobaria Vivipara cactus (Pin Cushion Cactus), Arizona, United States of America, North America

A lone hiker on Angels Window Overlook at Grand Canyon North Rim Arizona looking out at the sunrise.

The junction where the Transept Trail meets the Bright Angel Point Trail on the North Rim of Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Adult Mexican long-nosed bat (Leptonycteris yerbabuenae), at a feeder at night, Westward Look Resort, Tucson, Arizona, United States of America, North America

An adult great horned owl (Bubo virginianus), sitting on the nest in Madera Canyon, southern Arizona, Arizona, United States of America, North America

Sandstone layers and lines, Coyote Buttes Wilderness, Vermilion Cliffs National Monument, Arizona, United States of America, North America

The cattle corral of Lonely Dell Ranch, managed by the National Park Service, at Glen Canyon Recreation Area, Arizona, United States of America, North America

Western view of Sterling Canyon from its crest along the Sterling Pass Trail north of Sedona, 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

Closeup panorama of the Wupatki Pueblo Ruins at the Wupatki National Monument, Arizona, United States of America, North America

A low angle exterior closeup view of the Wukoki Pueblo at the Wupatki National Monument, Arizona, United States of America, North America

Grand Canyon viewed from the Desert View Point at night illuminated by moonlight, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

75 Mile Creek from the Tanner Trail in the Grand Canyon, with Lipan Point on the upper left and Escalante Butte on the upper right, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

A sign along Forest Service Road 492 that has been shot up by reckless gunfire, Prescott National Forest, Arizona, United States of America, North America

The super full moon rising over saguaro cactus (Carnegiea gigantea), Sweetwater Preserve, Tucson, Arizona, United States of America, North America

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

The naturally formed Redwall Cavern, Colorado River, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

View from Cape Royal Point of the north rim of Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

A canyon in Dead Horse Ranch State Park along the historic Lime Kiln Trail, Cottonwood, Arizona, United States of America, North America

Panorama of Grand Canyon viewed from Powell Point along the Hermit Road, 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

A rock hoodoo shaped like a horse head, along the base of Blue Mesa in Petrified Forest National Park, Arizona, United States of America, North America

An eroded sandstone formation called a Sandcastle, below the Blue Mesa in Petrified Forest National Park, Arizona, United States of America, North America