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View of Sunset Crater Volcano from the east slope of the Lenox Crater Trail, the dark gray soil is volcanic pumice, Arizona, United States of America, North America

Burned out tree on the left with Sunset Crater Volcano in the background, near Flagstaff, Arizona, United States of America, North America

Stone pillars overlooking Papago Creek Canyon on the south rim of the Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

A rocky pile in Petrified Forest National Park called Newspaper Rock, where some rocks have petroglyphs, 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

Panorama of three hoodoos shaped like kings, on the edge of the Blue Mesa in Petrified Forest National Park, Arizona, United States of America, North America

A sheer cliff of rock jutting out from the Blue Mesa along the Billings Gap Trail in Petrified Forest National Park, Arizona, United States of America, North America

Field of hoodoos in Goblin Garden in the Flat Tops of Petrified Forest National Park, Arizona, United States of America, North America

A dome shaped hill of purple bentonite with a rocky flat top in Petrified Forest National Park, Arizona, United States of America, North America

The Village of Oak Creek on the south side of Sedona viewed from the south end of Airport Mesa near sunset, Arizona, United States of America, North America

Spring Canyon in Canyon De Chelly National Monument viewed from the Sliding House Overlook on the south rim, 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 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

Grand Canyon viewed from Pima Point at sundown, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Hermit Canyon viewed from between Pima Point and Hermits Rest, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Grand Canyon with Yuma Point on the left and Hermits Rest on the right, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

The cliffs of Waldron Canyon west of Hermits Rest, Grand Canyon, 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

Rock formation known as Swirls on the Colorado Plateau, 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

Clouds over white and salmon sandstone, White Pocket, Vermilion Cliffs National Monument, Arizona, United States of America, North America

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

Hoodoo spires rising above the valley below the south side of Blue Mesa in Petrified Forest National Park, Arizona, United States of America, North America

Towering Hoodoos in the Jasper Forest of Petrified Forest National Park, Arizona, United States of America, North America

View of Cathedral Rock in Sedona from the middle of Oak Creek, Arizona, United States of America, North America

Pillars of rock standing just away from the cliff of the Grand Canyon south of Zuni Point with Moran Point in the distance, Grand Canyon National Park, UNESCO World Heritage Site, 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

Rough road leading to the south rim of Rattlesnake Canyon southeast of Sedona in the Wet Beaver Wilderness, Arizona, United States of America, North America

Cathedral Rock seen from Red Rock State Park, Sedona, Arizona, United States of America, North America

Grand Canyon view just below the summit of Buggeln Hill on the South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Salt covered hills of Bentonite in the Petrified Forest National Park along the Blue Forest Trail, Arizona, United States of America, North America

Confluence of the Little Colorado and Colorado Rivers, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

View of the Colorado River from the Glen Canyon Dam Bridge on Highway 89, 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

Water eroded Navajo Sandstone forms a slot canyon in Upper Antelope Canyon, Navajo Land, Arizona, United States of America, North America

View from the western slope of Steamboat Rock looking north, Coconino National Forest, Sedona, Arizona, United States of America, North America

A Bentonite formation in Petrified Forest National Park near Crystal Forest called the Battleship, 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

Bright Angel Canyon viewed from Coconino Overlook along North Kaibab Trail on Grand Canyon North Rim, Arizona, United States of America, North America

View from the Saddle Mountain Overlook on the northeast edge of Grand Canyon North Rim and the Kaibab National Forest, 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

Lee's Ferry Road running between Cathedral Rock and Vermilion Cliffs National Monument in Glen Canyon Recreation Area, Arizona, United States of America, North America

Reflective lagoon along East Bay Trail of Willow Lake, gray line on rock is where the water level used to be, Prescott, Arizona, United States of America, North America

Three hoodoos in a triangular formation in Devil's Playground called the Unholy Trinity, Petrified Forest National Park, Arizona, United States of America, North America

The Upper Antelope Canyon on a sunny summer day, Page, Arizona, United States of America, North America

Fisheye view of a dry waterfall where the Hance Creek drains into Hance Canyon at Grand Canyon South Rim, 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

The Powell Memorial in the distance viewed from Hopi Point at Grand Canyon, Arizona, United States of America, North America

The bus stop at the Powell Memorial off Hermit Road at Grand Canyon, Arizona, United States of America, North America

The old unmaintained cliff trail that leads to Hermits Rest, a trail abandoned when paved Greenway Trail constructed, Grand Canyon, Arizona, United States of America, North America

Steps leading down to Trailview Overlook under moonlight, Grand Canyon, Arizona, United States of America, North America

View from below a cliff ledge just west of Hermits Rest, Grand Canyon, Arizona, United States of America, North America

The Kaibab Forest in winter near Waldron Canyon west of Hermits Rest, Grand Canyon, Arizona, United States of America, North America

Waldron Canyon viewed from near its end, southwest of Hermit Canyon in winter, Grand Canyon, Arizona, United States of America, North America

A divide in the trail leading to the historic Agate House in Petrified Forest National Park, Arizona, United States of America, North America

A deep canyon eroded thru the hills of purple and gray bentonite clay near Hamilili Point on the south end of Petrified Forest National Park, Arizona, United States of America, North America

Rock islands just off a mesa near Hamilili Point on the south end of Petrified Forest National Park, Arizona, United States of America, North America

A paved walkway leading to the entrance of the Long Logs Trail in Petrified Forest National Park, Arizona, United States of America, North America

Monument Valley, West Mitten Butte, from Wildcat Trail, Arizona, United States of America, North America

Hance Creek at sunset with Sinking Ship on the left and Coronado Butte right of center right, Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, 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

Grand Canyon view from the north side of Horseshoe Mesa, Grand Canyon National Park, UNESCO World Heritage Site, 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

Panorama of Rock islands in Watson Lake viewed from the North Shore Trail, Prescott, Arizona, United States of America, North America

South Rim in the distance viewed from Cape Final on the North Rim with Freya's Castle just right of center, Grand Canyon National Park, UNESCO World Heritage Site, 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

Giant saguaro cactus (Carnegiea gigantea) at dawn 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

Panorama of Bell Rock, Courthouse Butte, and Lee Mountain, viewed from the HiLine Trail, composed of three photos, Arizona, United States of America, North America

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

View from the Lower Lava Trail near Sunset Crater Volcano, north of Flagtaff, Arizona, United States of America, North America

Coronada Butte viewed from the New Hance Trail on the south rim of the Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Toxic pond formed from runoff of mine tailings at an abandoned copper mine in the Prescott National Forest near Perkinsville, Arizona, United States of America, North America

Panorama of Kaibab Lake from its south side, Kaibab National Forest near Williams, Arizona, United States of America, North America

Panorama view of Sedona from the First Bench of Bear Mountain, to the right of center is Doe Mountain, Sedona, Arizona, United States of America, North America

A stone garden of Toadstool rocks on the south end of Keyhole Mesa in Petrified Forest National Park, 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

Wide angle view of Glen Canyon Dam from the wavy sandstone mesa of an area called the Chains, Arizona, United States of America, North America

A hoodoo ridge in Devil's Playground at Petrified Forest National Park, Arizona, United States of America, North America

A ridge of hoodoos that resemble dog heads in Devil's Playground at Petrified Forest National Park, Arizona, United States of America, North America

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 hiker looking west from a cliff near Zuni Abyss at Grand Canyon, Zuni Point in the background just right of center, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

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

A sandstone hoodoo at Ferry Swale in the Glen Canyon Recreation Area near Page, 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

The safety railing of the Great Mohave Wall Overlook at Grand Canyon, Arizona, United States of America, North America

Picnic table on the west side of Hermits Rest at Grand Canyon, Arizona, United States of America, North America

A small overlook east of Pima Point at Grand Canyon off of Hermit Road, Grand Canyon, Arizona, United States of America, North America

Grand Canyon viewed from Pima Point at sundown, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Grand Canyon viewed from Powell Point under moonlight, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America