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

A dry waterfall made of purple bentonite in the Flat Tops of Petrified Forest National Park, Arizona, United States of America, North America

Classic panorama view of Horseshoe Bend just north of the main tourist overlook near Page, Arizona, United States of America, North America

A hiker standing on a rock peninsula at Lake Powell, 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 Hance Canyon from the South Rim of Grand Canyon with Grandview Point is on the left, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

A dry waterfall in Crystal Creek below Crystal Mesa west of Hamilili Point in Petrified Forest National Park, Arizona, United States of America, North America

View from the top of a sandstone mesa, a fossilized sand dune, at Ferry Swale in the Glen Canyon Recreation Area near Page, Arizona, United States of America, North America

The Trailview Overlook East Vista at Grand Canyon South Rim, just off Hermit Road, Grand Canyon, UNESCO World Heritage Site, Arizona, United States of America, North America

Sign marking the end of the paved Greenway Trail that runs between Monument Creek Vista and Pima Point, Grand Canyon, Arizona, United States of America, North America

A warning sign to stay on the trail to the historic Agate House in Petrified Forest National Park, Arizona, United States of America, North America

A divide in the trail loop for the Giant Logs trail at Petrified Forest National Park with the Rainbow Forest Museum on upper left, Arizona, United States of America, North America

Hills of purple and gray bentonite near Hamilili Point on the south end of Petrified Forest National Park, Arizona, United States of America, North America

A solitary rock hoodoo in the purple badlands near Hamilili Point on the south end of Petrified Forest National Park, Arizona, United States of America, North America

A solitary rock hoodoo in the purple badlands near Hamilili Point on the south end of Petrified Forest National Park, Arizona, United States of America, North America

A solitary rock hoodoo in the purple badlands near Hamilili Point on the south end of Petrified Forest National Park, Arizona, United States of America, North America

The map sign at the gateway for the Long Logs Trail and Agate House in Petrified Forest National Park, Arizona, United States of America, North America

A lone hoodoo rock on the edge of a ridge overlooking the Jim Camp Wash on the south end of Petrified Forest National Park, Arizona, United States of America, North America

View from below a ridge that overlooks the Jim Camp Wash on the south end of Petrified Forest National Park, Arizona, United States of America, North America

Purple hills of volcanic bentonite near Hamilili Point on the south end of Petrified Forest National Park, Arizona, United States of America, North America

A gap between a stack of balanced boulders on a cliff east of Grandview Point at Grand Canyon South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Sandstone Wave, Paria Canyon, Vermillion Cliffs Wilderness, Arizona, United States of America (U.S.A.), North America

Storm approaching Shoshone Point on the South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

View of Sedona from the north slope of the Twin Buttes, Arizona, United States of America, North America

Naji Ravine just south of Naji Point on the North Rim of Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

The Billings Gap Overlook on the east side of Blue Mesa in Petrified Forest National Park, Arizona, United States of America, North America

The Billings Gap Overlook on the east side of Blue Mesa in Petrified Forest National Park, Arizona, United States of America, North America

Abstract details of orange slot canyon wall, Antelope Canyon X, Page, Arizona, United States of America, North America

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

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

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

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

Grand Canyon, from Hermit Road, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

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

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

Grand Canyon, Trail View Overlook, 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

Aerial view of the iconic Grand Canyon on a summer day, UNESCO World Heritage Site, Arizona, United States of America, North America

East slopes of Haystack Mesa in Petrified Forest National Park, Arizona, United States of America, North America

The south Haystack Hill in Petrified Forest National Park, Arizona, United States of America, North America

Billings Gap Overlook on Blue Mesa towards sunset, Petrified Forest National Park, Arizona, United States of America, North America

A dry waterfall west of Hamilili Point in Petrified Forest National Park, Arizona, United States of America, North America

Goblin Garden west of Hamilili Point in Petrified Forest National Park, Arizona, United States of America, North America

Autumn colored Aspen trees off Cape Royal Road in Grand Canyon North Rim, UNESCO, Arizona, United States of America

A view from the surrounding mountains of Concepcion Bay, Baja California Sur, Sea of Cortez, Mexico, North America

White-crowned sparrow (Zonotrichia leucophrys), Chiricahuas, Coronado National Forest, Arizona, United States of America, North America

View of the Grand Canyon east of the historic Watch Tower, managed by the National Park Service, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

View of Wet Beaver Creek off of the Bell Trail in Coconino National Forest, Arizona, United States of America

Boundary gate and cattle-proof fence between Coconino National Forest and Wet Beaver Creek Wilderness, Arizona, United States of America

Boundary gate and cattle-proof fence between Coconino National Forest and Wet Beaver Creek Wilderness, Arizona, United States of America

The grassland prairie on the summit of White Mesa in Coconino National Forest, Arizona, United States of America

Wet Beaver Creek Canyon viewed from the south end of White Mesa in Coconino National Forest, Arizona, United States of America

Casner Canyon in Wet Beaver Creek Wilderness viewed from White Mesa summit, in Coconino National Forest, Arizona, United States of America

View of San Francisco Peaks from a cliff at the end of the Telephone Trail north of Sedona with Oak Creek Canyon on the left, Arizona, United States of America, North America

The fire watchtower on the summit of Apache Maid Mountain, Coconino National Forest, Arizona, United States of America

An information sign on the summit of Apache Maid Mountai, Coconino National Forest, Arizona, United States of America

Fisheye view from below the fire watchtower on summit of Apache Maid Mountain, Coconino National Forest, Arizona, United States of America

View from second deck of fire watchtower on summit of Apache Maid Mountain, Coconino National Forest, Arizona, United States of America

View from second deck of fire watchtower on summit of Apache Maid Mountain, Coconino National Forest, Arizona, United States of America

Road to the summit of Apache Maid Mountain, Coconino National Forest, Arizona, United States of America

A warning sign stating that the road can be closed seasonally, Coconino National Forest, Arizona, United States of America

Houseboats moored in Wahweap Bay, Castle Rock beyond, Lake Powell, Glen Canyon National Recreation Area, Page, Arizona, United States of America, North America

Basalt boulders and cliffs, Johnson Canyon east of Bainbridge Steel Dam Lake near Ash Fork, Kaibab National Forest, Arizona, United States of America

Basalt boulders and cliffs, Johnson Canyon between Bainbridge Steel and Stone Dams, Kaibab National Forest, Arizona, United States of America

Basalt boulders and cliffs, Johnson Canyon east of Bainbridge Steel Dam Lake near Ash Fork, Kaibab National Forest, Arizona, United States of America

Dry waterfall cliffs, Johnson Canyon between Bainbridge Steel and Stone Dams near Ash Fork, Kaibab National Forest, Arizona, United States of America

Old water pipe, Johnson Canyon between Bainbridge Steel and Stone Dams near Ash Fork, Kaibab National Forest, Arizona, United States of America

Dry waterfall cliffs, Johnson Canyon between Bainbridge Steel and Stone Dams near Ash Fork, Kaibab National Forest, Arizona, United States of America

Basalt boulders and cliffs in a section of Johnson Canyon halfway between the Bainbridge Steel Dam and Stone Dam near Ash Fork Arizona in the Kaibab National Forest.

Basalt boulders and cliffs in a section of Johnson Canyon halfway between the Bainbridge Steel Dam and Stone Dam near Ash Fork Arizona in the Kaibab National Forest.

Full moon on saguaro cactus (Carnegiea gigantea), Sweetwater Preserve, Tucson, Arizona, United States of America, North America

Three bolts of lightning striking near the Palo Verde Nuclear Station in Wintersburg Arizona during the 2012 Monsoon season, Arizona, United States of America, North America

The giant sandstone buttes glowing pink at sunset in 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

Panorama South view of Courthouse Butte and the Judges Bench from Courthouse Butte Loop Trail in Sedona, Arizona, United States of America, North America

Early morning view of Sedona from Schnebly Hill Vista, Capitol Butte on the left and Wilson Mountain on the right, Sedona, Arizona, United States of America, North America

Panorama of Sedona viewed from the summit of Doe Mountain, Arizona, United States of America, North America

The Craggy Cliffs overlooking Casner Canyon north of Sedona from near the Schnebly Hill Vista, 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

Flyboarding with Bravada Yachts on Lake Powell, border of Arizona and Utah, 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

Mounds and cliffs of expansive clay called Bentonite in the Jasper Forest of Petrified Forest National Park, Arizona, United States of America, North America

The Lithodendron Wash in the Petrified Forest National Park, Arizona, United States of America, North America

A large petrified log along the Blue Mesa Trail in Petrified Forest National Park, Arizona, United States of America, North America

Panorama view of the Painted Desert from Tawa Point in Petrified Forest National Park, 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

Hills of blood red bentonite clay below Kachina Point in Petrified Forest National Park, Arizona, United States of America, North America