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The northwest slope of the Purple Peninsula in Petrified Forest National Park, 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

Cathedral Rock viewed from the slope of neighbouring Sunset Rock in Glen Canyon Recreation Area at Marble Canyon, Arizona, United States of America, North America

A flowing Spring of salty brine water in Petrified Forest National Park Arizona. Located below Pintado Point.

A monsoon storm rolling across Grand Canyon between Zuni Point and Papago Point, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

The south spire on the south summit of Cockscomb Butte in Sedona, Arizona, United States of America, North America

A feminine shaped hoodoo in Petrified Forest Arizona on the north side of the Clam Beds called Queen of Pearls.

Hearst Hill viewed from across Hance Canyon on the South Rim of Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

The pathway into a spur canyon just north of the main overlook of Horseshoe Bend, Arizona, United States of America, North America

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

The safety railed stone cliff of the Mohave Point Overlook, Grand Canyon, UNESCO World Heritage Site, Arizona, United States of America, North America

King penguin (Aptenodytes patagonica) adult and first season chick, Salisbury Plain, South Georgia, Polar Regions

Painted mural with text saying Plante amor (Plant love) and heart at Cerro La Florida, Valparaiso, Valparaiso Province, Valparaiso Region, Chile, South 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

An overlook along the Transept Trail with Oza Butte on the right at Grand Canyon North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

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

House Valley, with the Vermilion Cliffs in the distance, viewed from the summit of Saddle Mountain on the north edge of Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

A hiker looking out from a cliff in Hermit Canyon at Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, 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

Grand Canyon South Rim viewed from Cedar Ridge along the South Kaibab Trail, UNESCO World Heritage Site, Arizona, United States of America, North America

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

White Horse Lake in the Kaibab National Forest of northern Arizona viewed from its northwest lagoon, Arizona, United States of America, North America

A hiker standing on a rock island at Pinal Point Grand Canyon, 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

Fisheye view of a deep chasm near Papago Point at Grand Canyon with Zuni Point in the distance, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

View from Lacey Point in Petrified Forest National Park, Arizona, United States of America, North America

A ridge of purple bentonite clay jutting out into Jasper Forest at Petrified Forest National Park Arizona.

A hidden natural arch near Sliding House Overlook on the south rim of Canyon De Chelly, Arizona, United States of America, North America

A dry waterfall at the base of a rock island at Ferry Swale in the Glen Canyon Recreation Area near Page, Arizona, United States of America, North America

Various hoodoos in Angels Garden at Petrified Forest National Park, 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

Phallic pillars known as fairy chimneys in the valley known as Love Valley near Goreme in Cappadocia, Anatolia, Turkey, Asia Minor, Eurasia

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

A sign posted by the Park Service pointing the way to Cape Final on the North Rim of Grand Canyon, Arizona, United States of America, North America

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

Grand Canyon viewed from the cliffs of Walhalla Glades on the North Rim, with Cape Royal on left, Vishnu Temple in the center, and Wotan's Throne on right, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Alamo Lake with the Arrastra Mountain Wilderness in the distance, Arizona, United States of America, North America

Grand Canyon view with a rock window beneath a cliff on the right, located west of Pinal Point on the south rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Giant boulders along Trail 345 in the Granite Mountain Recreation Area of the Prescott National Forest.

Panorama of Cathedral Rock covered in winter snow and ice, Sedona, Arizona, United States of America, North America

Red Rock State Park viewed from the Eagle Nest Trail Overlook, Sedona, 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

The confluence of Badger Canyon and the Colorado River in Marble Canyon, Arizona, United States of America, North America

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

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 rock spire separate from the cliff wall west of Zuni Point at Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, 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.

View of the salty bentonite hills on the north side of the Blue Forest in Petrified Forest National Park Arizona.

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

Dinosaur tracks at a tourist attraction on the Navajo Indian Reservation near Tuba City, Arizona, United State of America, North America

Ancient Hogans used in Navajo ceremonies, in Navajo National Monument, Navajo Indian Reservation northwest of the town of Kayenta, Arizona, United States of America, North America

The Horse Collar Ruins located between the Sipapu Arch Bridge and the Kachina Arch Bridge, Natural Bridges National Monument, Utah, United States of America, North America

Valley of the Gods viewed from the north slope of the rock formation called Rudolph and Santa, northwest of Monument Valley and Mexican Hat, Utah, United States of America, North America

View from below the cliffs of the spur canyon just north of the main overlook of Horseshoe Bend, Arizona, United States of America, North America

View from below the cliffs of the spur canyon just north of the main overlook of Horseshoe Bend, Arizona, United States of America, North America

The safety railed stone cliff of the Mohave Point Overlook, Grand Canyon, UNESCO World Heritage Site, Arizona, United States of America, North America

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

Grand Canyon view from Moran Point on a cloudy day with the clouds floating inside the canyon, Grand Canyon National Park, UNESCO World Heritage Site, 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

The Transept Trail sign where it branches off from 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

A bench overlooking Grand Canyon North Rim from the Vista Encantada Picnic area, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

View of a rock formation called Cathedral Butte at the base of the Vermilion Cliffs, Glen Canyon Recreation Area, Arizona, United States of America, North America

The centre Altar of Cathedral Rock, with Courthouse Buttes in the distance just above the flat altar rock in the centre, Sedona, Arizona, United States of America, North America

Grand Canyon viewed from the Bright Angel Trail in winter just past the 1.5 Mile Rest House after sunrise, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Northeast Shoreline view of White Horse Lake near Williams, located within the Kaibab National Forest, Arizona, United States of America, North America

A ridge in the Devil's Playground of crumbling hoodoos that resemble Goblins, Petrified Forest National Park, 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 Bow Rock of the formation called Sinking Ship in Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

View of Lipan Point on the right from Pinal Point at Grand Canyon, with The Desert View Watchtower in the distance, 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

Grand Canyon viewed from No Name Point halfway between Lipan Point and Pinal Point, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

A slot canyon along Cathedral Wash in Glen Canyon Recreation Area, Arizona, United States of America, North America

Grand Canyon viewed from the cliffs west of Moran Point with Coronado Butte on the far left, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

The haunted Massacre House Ruins in Canyon del Muerto (Canyon of the Dead), on the north end of Canyon De Chelly, site of a Navajo massacre by Spanish Soldiers in 1825, Arizona, United States of America, North America

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

A rocky path to the Mohave Point Overlook, Grand Canyon, UNESCO World Heritage Site, Arizona, United States of America, North America

Grand Canyon view from Moran Point on a cloudy day with the clouds floating inside the canyon, Grand Canyon National Park, UNESCO World Heritage Site, 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

Ancient Indian Ruins under Fay Arch in Fay Canyon in Sedona, Arizona, United States of America, North America