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A cliff cave below Crystal Mesa west of Hamilili Point in Petrified Forest National Park, Arizona, United States of America, North America

View of Crystal Mesa 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

Goblin Garden west of Hamilili Point in Petrified Forest National Park, 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

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

Greenland Lake reduced to a mud hole, Grand Canyon North Rim, UNESCO, Arizona, United States of America

Greenland Lake reduced to a mud hole, Grand Canyon North Rim, UNESCO, Arizona, United States of America

Burned forest area taken over by young Aspen trees in fall colors east of Greenland Lake, Grand Canyon North Rim, Arizona, United States of America

Aspen trees in autumn colors east of Greenland Lake, Grand Canyon North Rim, Arizona, United States of America

Deciduous trees with yellow and orange fall colors mixed with green Pine Trees, Kaibab National Forest, Arizona, United States of America

Highway US89A looking east to Vermilion Cliffs National Monument with Kaibab National Forest boundary sign, Arizona, United States of America

The Red Wall of sandstone east of Supai Tunnel on North Kaibab Trail, Grand Canyon North Rim, UNESCO, Arizona, United States of America

Ephemeral Spring on Red Wall of Roaring Springs Canyon, North Kaibab Trail, Grand Canyon North Rim, UNESCO, Arizona, United States of America

View above Red Wall Bridge crossing Roaring Springs Canyon, North Kaibab Trail, Grand Canyon North Rim, UNESCO, Arizona, United States of America

View of the Roaring Springs Canyon cliffs from the Red Wall Bridge, Grand Canyon North Rim, UNESCO, Arizona, United States of America

Lonely Boulders and exposed rock in Pleasant Valley, Kaibab National Forest just north of Grand Canyon North Rim, Arizona, United States of America

The upper leg of the North Kaibab Trail at Grand Canyon North Rim, UNESCO, Arizona, United States of America

The Coconino Overlook along the North Kaibab Trail at Grand Canyon North Rim, UNESCO, Arizona, United States of America

The 11th switchback along the North Kaibab Trail at Grand Canyon North Rim, UNESCO, Arizona, United States of America

The 12th switchback along the North Kaibab Trail at Grand Canyon North Rim, UNESCO, Arizona, United States of America

A curve in the North Kaibab Trail between Coconino Overlook and the Supai Tunnel Rest Area, Grand Canyon, Arizona, United States of America

The 20th switchback along the North Kaibab Trail at Grand Canyon North Rim, UNESCO, Arizona, United States of America

The 23rd switchback along the North Kaibab Trail at Grand Canyon North Rim, UNESCO, Arizona, United States of America

Bellizona and the Church of Saints Peter and Steven, seen from Castelgrande, Canton Ticino, Switzerland

Pieces of petrified wood on hills overlooking Dead Wash, Petrified Forest National Park, Arizona, United States of America

Pieces of petrified wood on hills overlooking Dead Wash, Petrified Forest National Park, Arizona, United States of America

Boulder pile in a valley leading to Dead Wash in Petrified Forest National Park, Arizona, United States of America

An old Model-T placed as a marker for the Route 66 Road Alignment in Petrified Forest National Park, Arizona, United States of America

Cliff view of Dead Wash Valley in Petrified Forest National Park, at sundown, Arizona, United States of America

Grand Canyon view from western edge of Horseshoe Mesa, Grand Canyon National Park, UNESCO World Heritage Site, 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

Coconino National Forest from the southwest 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

The frozen Campbell Draw Tank with approaching snow storm, 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

Closeup of an Arizona Gopher Snake (Pituophis Catenifer), a non-venomous constrictor harmless to humans, Arizona, United States of America, North America

Panorama of the Grand Canyon just east of Zuni Point on the south rim with haze from smoke from a wildfire on the north rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Closeup of Shoshone Rock on the edge of Shoshone Point on the south rim of the Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Panorama of Tuzigoot and the Verde Valley, managed by the National Park Service, Arizona, United States of America, North America

Panorama view of Courthouse Butte and Cathedral Rock from a sandstone terrace off of Llama Trail in Sedona, Arizona, United States of America, North America

HDR composite of Cathedral Rock in Sedona under the Milky Way sky, Arizona, United States of America, North America

Pickup truck on Fire Road 182 exploring prairie grassland near Drake in the Prescott National Forest, Arizona, United States of America, North America

Panorama of the setting sun at the First Forest in Petrified Forest National Park, Arizona, United States of America, North America

A giant petrified log on a sandstone pedestal on the edge of the Blue Mesa in Petrified Forest National Park, Arizona, United States of America, North America

A man hiking on the edge of a cliff overlooking Horseshoe Bend near Page, Arizona, United States of America, North America

The emerald blue waters of Lake Powell just north of the Glen Canyon Dam in an area called The Chains, near Page, 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 below the north cliffs of Blue Mesa in Petrified Forest National Park, Arizona, United States of America, North America

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

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

Bright Angel Trail at Grand Canyon South Rim viewed from the Trailview Overlook along Hermit Road, Grand Canyon, UNESCO World Heritage Site, Arizona, United States of America, North America

A bench along the rim trail overlooking Grand Canyon South Rim off Hermit Road, Grand Canyon, UNESCO World Heritage Site, Arizona, United States of America, North America

Stairway leading down to the Trailview Overlook East Vista at Grand Canyon South Rim, off Hermit Road, Grand Canyon, UNESCO World Heritage Site, 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

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

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

Steel picnic table along the rim trail overlooking Grand Canyon South Rim off Hermit Road halfway between Monument Creek Vista and The Abyss, Grand Canyon, Arizona, United States of America, North America

A warning sign at the start of the Hermit Canyon Trail stating that getting to the bottom is optional, but getting back to the top is mandatory, Grand Canyon, Arizona, United States of America, North America

The paved trail that leads to the historic Agate House in Petrified Forest National Park, 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

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 cliff overhang shaped like the head of a Duck west of Hamilili Point on the south end of Petrified Forest National Park, Arizona, United States of America, North America

Sandstone that has been eroded into forms that resemble clam shells on the south end of Petrified Forest National Park, Arizona, United States of America, North America

The Little Teepees on the north side of Haystack Mesa in Petrified Forest National Park, Arizona, United States of America, North America

The Little Teepees on the north side of Haystack Mesa in Petrified Forest National Park, Arizona, United States of America, North America

View of Anvil Hill and Crystal Butte from the summit of Crystal Mesa 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

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

Anvil Hill west of Hamilili Point in Petrified Forest National Park, Arizona, United States of America, North America

A sloping red sand dune above Hamilili Wash in Petrified Forest National Park, Arizona, United States of America, North America

Cape Royal Road winding through Fuller Canyon at Grand Canyon North Rim, UNESCO, Arizona, United States of America

The west entrance of Supai Tunnel on North Kaibab Trail, Grand Canyon North Rim, UNESCO, Arizona, United States of America

The 7th switchback along the North Kaibab Trail at Grand Canyon North Rim, UNESCO, Arizona, United States of America

The 17th switchback along the North Kaibab Trail at Grand Canyon North Rim, UNESCO, Arizona, United States of America

The boundary fence on the east side of Petrified Forest National Park, Arizona, United States of America

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

Sandstone bowl of captured rainwater reflecting the sky along Hog Heaven Trail in Sedona, Arizona, United States of America, North America

View of the Secret Cove on the east side of Watson Lake in Prescott, Arizona, United States of America, North America

Large boulders balanced on a sloping ledge of Granite along the PMBA Trail in Constellation Park in Prescott, Arizona, United States of America, North America

A Mule Deer native to Arizona roaming the forest near Prescott, 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

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

Bright Angel Canyon on the south rim of the Grand Canyon viewed just north of Indian Gardens, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Panorama of the western Bonito Lava Field at Sunset Crater Volcano, Arizona, United States of America, North America