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An ephemeral pool of water in the granite riverbed of the Agua Fria River Canyon in the Agua Fria National Monument of Arizona.

An ephemeral pool of water in the granite riverbed of the Agua Fria River Canyon in the Agua Fria National Monument of Arizona.

An ephemeral pool of water in the granite riverbed of the Agua Fria River Canyon in the Agua Fria National Monument of Arizona.

Sign marking Badger Springs Road off of I-17 Arizona. This road leads to a hiking trail in the Agua Fria National Monument.

View of Black Canyon on the west side of the Agua Fria National Monument of Arizona with the Bradshaw Mountains in the distance.

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.

Dead trees from a past forest fire on the slope of O'Leary Peak in northern Arizona. Sunset Crater Volcano is in the background.

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

Grand Canyon view at sunset from the west side of Moran Point, Grand Canyon National Park, UNESCO World Heritage Site, 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

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

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

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

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

Grand Canyon view from western edge of Horseshoe Mesa, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Panorama view of Freya's Castle and Wotan's Throne from the southwest side of Cape Royal on Grand Canyon North Rim, Arizona, United States of America, North America

New shopping center and apartments in the wealthy area of Gueliz in Marrakesh, Morocco, North Africa, Africa

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

Hog Wash (Hog Heaven), the intersection of two trails on the Northwest side of the Twin Buttes in Sedona, Arizona, United States of America, North America

The remains of a Guard Shack above the Johnson Canyon Railroad Tunnel. The railroad was abandoned in 1959 and is now owned by the Kaibab National Forest of Arizona. No property release needed.

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

High voltage power lines stretching across Johnson Canyon in the Kaibab National Forest of Arizona. Viewed from the historic abandoned Johnson Canyon Railroad.

The south entrance of the historic Johnson Canyon Railroad Tunnel. Constructed in 1881, abandoned in 1959. It's now part of the Kaibab National Forest of Arizona. No property release needed.

The south entrance of the historic Johnson Canyon Railroad Tunnel. Constructed in 1881, abandoned in 1959. It's now part of the Kaibab National Forest of Arizona. No property release needed.

The south entrance of the historic Johnson Canyon Railroad Tunnel. Constructed in 1881, abandoned in 1959. It's now part of the Kaibab National Forest of Arizona. No property release needed.

A metal retaining wall holding up the Johnson Canyon Railroad grade that has been damaged. The railroad went bankrupt and was abandoned in 1959. The land is now part of the Kaibab National Forest of Arizona.

The north entrance of the historic Johnson Canyon Railroad Tunnel. Constructed in 1881, abandoned in 1959. It's now part of the Kaibab National Forest of Arizona. No property release needed.

Interior view of the Johnson Canyon Railroad Tunnel. Constructed in 1881, abandoned in 1959. It's now part of the Kaibab National Forest of Arizona. No property release needed.

The north entrance of the historic Johnson Canyon Railroad Tunnel. Constructed in 1881, abandoned in 1959. It's now part of the Kaibab National Forest of Arizona. No property release needed.

Interior view of the Johnson Canyon Railroad Tunnel. Constructed in 1881, abandoned in 1959. It's now part of the Kaibab National Forest of Arizona. No property release needed.

A metal retaining wall along the Johnson Canyon Railroad that has been damaged by a past derailment. The railroad went bankrupt and was abandoned in 1959. The land is now part of the Kaibab National Forest of Arizona.

A section of the Johnson Canyon Railroad grade that has eroded away. The railroad went bankrupt and was abandoned in 1959. The land is now part of the Kaibab National Forest of Arizona.

A dilapidated bridge along the Johnson Canyon Railroad. The railroad was abandoned in 1959 and is now owned by the Kaibab National Forest of Arizona. No property release needed.

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

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

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

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

The concrete foundation remains of the old Welch Train Station for the Johnson Canyon Railroad. The railroad was abandoned in 1959 and is now owned by the Kaibab National Forest of Arizona. No property release needed.

An old relic from the Johnson Canyon Railroad. The railroad was abandoned in 1959 and is now owned by the Kaibab National Forest of Arizona. No property release needed.

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