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

Greenland Lake reduced to a mud hole, Grand Canyon North Rim, UNESCO, 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

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

Male broad-billed hummingbird (Cynanthus latirostris) in flight, Madera Canyon, Coronado National Forest, Arizona, United States of America, North America

Sandstone rock formation in the Dixie National Forest, Utah, USA. The National Forest was created in 1906.

Two evergreen trees among yellow aspen trees in the fall, White River National Forest, Colorado, United States of America, North America

Sunset at Dowdy Lake, Red Feather Lakes District, Roosevelt National Forest, Colorado, United States of America, North America

Yellow aspens and evergreens in the fall, Grand Mesa-Uncompahgre-Gunnison National Forest, Colorado, United States of America, North America

Petroglyph, Alabama Hills, Inyo National Forest, California, United States of America, North America

Female broad-tailed hummingbird (Selasphorus platycercus) in flight, Red Feather Lakes District, Roosevelt National Forest, Colorado, United States of America, North America

Lathe Arch framing Mount Whitney at first light Alabama Hills, Inyo National Forest, California, United States of America, North America

Female broad-tailed hummingbird (Selasphorus platycercus) in flight, Red Feather Lakes District, Roosevelt National Forest, Colorado, United States of America, North America

Female broad-tailed hummingbird (Selasphorus platycercus) perched, Routt National Forest, Colorado, United States of America, North America

Pictographs, Alabama Hills, Inyo National Forest, California, United States of America, North America

Walker in Quinault Rain Forest, Olympic National Park, Washington State, United States of America, North America

Red rock pillars with fresh snow, Red Canyon, Dixie National Forest, Utah, United States of America, North America

The fire watchtower on the summit of O'Leary Peak in the Coconino National Forest of Arizona. Adjacent to the Sunset Crater National Monument.

Forest Service Road that leads to the O'Leary Peak Watchtower and Overlook. Adjacent to Sunset Crater National Monument Arizona in the Coconino National Forest.

A snow squall storm building up over Humphrey's Peak. Viewed from O'Leary Peak in the Coconino National Forest of Arizona. Adjacent to Sunset Crater National Monument.

End of the Forest Service Road that leads to the O'Leary Peak Watchtower and Overlook. The metal grating is to add traction for vehicles. Adjacent to Sunset Crater National Monument Arizona in the Coconino National Forest.

A snow squall storm building up over Humphrey's Peak. Viewed from O'Leary Peak in the Coconino National Forest of Arizona. Adjacent to Sunset Crater National Monument.

The Forest Service Road that leads to the summit of O'Leary Peak in the Coconino National Forest of Arizona.

The eastern summit of O'Leary Peak in the Coconino National Forest of Arizona. Adjacent to the Sunset Crater National Monument.

Mountain Ash forest in fog, Dandenong Ranges National Park, Dandenong Ranges, Victoria, Australia, Pacific

Shattered pieces of petrified wood in a sandy wash in the Jasper Forest of Petrified Forest National Park, Arizona, United States of America, North America

A Hoodoo of expansive clay called Bentonite in the Jasper Forest of Petrified Forest National Park, Arizona, United States of America, North America

Shattered pieces of petrified wood in a sandy wash in the Jasper Forest of Petrified Forest National Park, Arizona, United States of America, North America

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

Red hills of bentonite clay overlooking Dead Wash in 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

A canyon that drains into Dead Wash, Petrified Forest National Park, Arizona, United States of America

A canyon that drains into Dead Wash, Petrified Forest National Park, Arizona, United States of America

An unnamed canyon that leads into Dead Wash at Petrified Forest National Park, Arizona, United States of America

An unnamed canyon that leads to Dead Wash in Petrified Forest National Park, Arizona, United States of America

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

An island of rock in an unnamed canyon that leads to Dead Wash in Petrified Forest National Park, Arizona, United States of America

Patches of snow in the shade of a hill in Dead Wash at 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

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

Red hills of bentonite clay overlooking 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

Red hills of bentonite clay overlooking Dead Wash in Petrified Forest National Park, Arizona, United States of America

Horseshoe Falls, Mount Field National Park, UNESCO World Heritage Site, Tasmania, Australia, Pacific

Pomeroy Tanks near Sycamore Falls, located in the Kaibab National Forest near Williams, Arizona, United States of America, North America

Large pieces of petrified wood in the Jasper Forest of Petrified Forest National Park, Arizona, United States of America, North America

Lake Moraine at sunrise, long exposure, Banff National Park, UNESCO World Heritage Site, Alberta, Canadian Rockies, Canada, North America

A twisted very old Bristlecone Pine (Pinus longaeva), on sage brush covered slopes of dolomite limestone, in the Ancient Bristlecone Pine Forest Park, Inyo National Forest, Bishop, California, United States of America, North America

Autumn colours and sunshine over Brandlehow and Manesty wood, Derwent Water, Lake District National Park, UNESCO World Heritage Site, Cumbria, England, United Kingdom, Europe

The remains of a Guard Shack above the Johnson Canyon Railroad Tunnel, Kaibab National Forest of Arizona, USA

View of Johnson Canyon from above the abandoned Johnson Canyon Railroad Tunnel in the Kaibab National Forest of Arizona, USA

High voltage power lines stretching across Johnson Canyon in the Kaibab National Forest of Arizona, USA

High voltage power lines stretching across Johnson Canyon in the Kaibab National Forest of Arizona, USA

The south entrance of the historic Johnson Canyon Railroad Tunnel, Kaibab National Forest of Arizona, USA

The south entrance of the historic Johnson Canyon Railroad Tunnel, Kaibab National Forest of Arizona, USA

An artificial pond for cattle called Rods Winter Camp Tank in the Kaibab National Forest of Arizona, USA

The south entrance of the historic Johnson Canyon Railroad Tunnel, Kaibab National Forest of Arizona, USA

A metal retaining wall holding up the Johnson Canyon Railroad grade that has been damaged, Kaibab National Forest of Arizona, USA

The north entrance of the historic Johnson Canyon Railroad Tunnel, Kaibab National Forest of Arizona, USA

The north entrance of the historic Johnson Canyon Railroad Tunnel, Kaibab National Forest of Arizona, USA

A section of the Johnson Canyon Railroad grade that has eroded away, Kaibab National Forest of Arizona, USA

High voltage power lines stretching across Johnson Canyon in the Kaibab National Forest of Arizona, USA

A narrow and overgrown section of the abandoned Johnson Canyon Railroad in the Kaibab National Forest of Arizona, USA

A narrow and overgrown section of the abandoned Johnson Canyon Railroad in the Kaibab National Forest of Arizona, USA

View of Johnson Canyon from the Johnson Canyon Railroad Grade, Kaibab National Forest of Arizona, USA

View of Johnson Canyon from the abandoned Johnson Canyon Railroad Grade in the Kaibab National Forest of Arizona, USA

The concrete foundation remains of the old Welch Train Station for the Johnson Canyon Railroad, Kaibab National Forest of Arizona, USA

View from below the rim of the giant sinkhole known as Johnson Crater in the Kaibab National Forest near Ash Fork Arizona, USA

View from below the rim of the giant sinkhole known as Johnson Crater in the Kaibab National Forest near Ash Fork Arizona, USA

View from below the rim of the giant sinkhole known as Johnson Crater in the Kaibab National Forest near Ash Fork Arizona, USA

View from below the rim of the giant sinkhole known as Johnson Crater in the Kaibab National Forest near Ash Fork Arizona, USA

Super Panorama of the giant sinkhole known as Johnson Crater in the Kaibab National Forest near Ash Fork Arizona, USA

Sport Utility Vehicle traveling on Forest Service Road 709 in the Kaibab National Forest of Arizona, USA

Sport Utility Vehicle traveling on Forest Service Road 709 in the Kaibab National Forest of Arizona, USA

The Thirteen Mile Cattle Tank off of Corva Road in the Kaibab National Forest near Ash Fork Arizona, USA

The Thirteen Mile Cattle Tank off of Corva Road in the Kaibab National Forest near Ash Fork Arizona, USA

A livestock corral for the Thirteen Mile Cattle Tank off of Corva Road, Kaibab National Forest, Arizona, USA