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The 18th 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

The interior of the Supai Tunnel along the North Kaibab Trail, Grand Canyon North Rim, UNESCO, Arizona, United States of America

An old gate to the sinkhole called the Keyhole Sink in Williams Arizona within the Kaibab National Forest.

The cliff wall of the Keyhole Sink in the Kaibab National Forest near Williams Arizona. This sink is an open ended sinkhole where water can flow out of it.

The Pueblo La Plata Indian Ruins near Silver Creek Canyon in the Agua Fria National Monument of Arizona. Located north of Black Canyon City.

Ancient wall of the Fort Silver Indian Ruins overlooking Silver Creek Canyon in Agua Fria National Monument of Arizona. Located near the Pueblo La Plata ruins.

Road sign along Bloody Basin Road in the Agua Fria National Monument of Arizona directing the way to the Pueblo La Plata Indian Ruins.

The primitive Bloody Basin Road winding thru the Agua Fria National Monument north of Black Canyon City Arizona.

High Tension Power Lines stretching across Bloody Basin in Agua Fria National Monument north of Black Canyon City Arizona.

Look back up the freeway exit ramp for Bloody Basin Road in the Agua Fria National Monument of Arizona. Located north of Black Canyon City.

A Saguaro covered scenic ridge overlooking the Agua Fria River in the Agua Fria National Monument of Arizona.

A Saguaro covered scenic ridge overlooking the Agua Fria River in the Agua Fria National Monument of Arizona.

Remnants of the Richinbar Mine within the Agua Fria National Monument north of Black Canyon City Arizona. Mine was established in 1905 but was abandoned in 1940 when the company that owned it went bankrupt.

Remnants of the Richinbar Mine within the Agua Fria National Monument north of Black Canyon City Arizona. Mine was established in 1905 but was abandoned in 1940 when the company that owned it went bankrupt.

Remnants of the Richinbar Mine within the Agua Fria National Monument north of Black Canyon City Arizona. Mine was established in 1905 but was abandoned in 1940 when the company that owned it went bankrupt.

Remnants of the Richinbar Mine within the Agua Fria National Monument north of Black Canyon City Arizona. Mine was established in 1905 but was abandoned in 1940 when the company that owned it went bankrupt.

Remnants of the Richinbar Mine within the Agua Fria National Monument north of Black Canyon City Arizona. Mine was established in 1905 but was abandoned in 1940 when the company that owned it went bankrupt.

Remnants of the Richinbar Mine within the Agua Fria National Monument north of Black Canyon City Arizona. Mine was established in 1905 but was abandoned in 1940 when the company that owned it went bankrupt.

Remnants of the Richinbar Mine within the Agua Fria National Monument north of Black Canyon City Arizona. Mine was established in 1905 but was abandoned in 1940 when the company that owned it went bankrupt.

Remnants of the Richinbar Mine within the Agua Fria National Monument north of Black Canyon City Arizona. Mine was established in 1905 but was abandoned in 1940 when the company that owned it went bankrupt.

Ancient Indian Ruins near the historic Richinbar Mine in the Agua Fria National Monument north of Black Canyon City Arizona.

Open mine shaft at the Richinbar Mine within the Agua Fria National Monument north of Black Canyon City Arizona. Mine was established in 1905 but was abandoned in 1940 when the company that owned it went bankrupt.

An abandoned cabin next to an active cattle corral in the Agua Fria National Monument north of Black Canyon City Arizona. Public land. No property release needed.

Trailhead for a sinkhole called the Keyhole Sink in Williams Arizona within the Kaibab National Forest.

The southeast summit of O'Leary Peak viewed from a volcanic cinder hill in Coconino National Forest near Sunset Crater National Monument of Arizona.

A rain storm over the North Rim of Grand Canyon National Park Arizona. Viewed from the Pipe Creek Vista on the South Rim.

A rain storm over the North Rim of Grand Canyon National Park Arizona. Viewed from the Pipe Creek Vista on the South Rim.

Burned trees on a Volcanic cinder rim in Coconino National Forest near Sunset Crater National Monument of Arizona. Humphrey's Peak is in the background.

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

Saguaro cactus (Carnegiea gigantea) among Mexican gold poppy (Eschscholzia californica mexicana), Organ Pipe Cactus National Monument, Arizona, United States of America, North America

Western screech-owl (Megascops kennicottii) in flight, The Pond, Amado, Arizona, United States of America, North America

Broad-billed hummingbird (Cynanthus latirostris) perched, Patagonia, Arizona, United States of America, North America

Captive river otter (Lutra canadensis) swimming, Arizona Sonora Desert Museum, Tucson, Arizona, United States of America, North America

Bobcat (Lynx rufus) in captivity, Arizona Sonora Desert Museum, Tucson, Arizona, 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.

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

A rain storm over the North Rim of Grand Canyon National Park Arizona. Viewed from Yavapai Point on the South Rim.

Panorama of a rain storm over the North Rim of Grand Canyon National Park Arizona. Viewed from Yavapai Point on the South Rim. Composed of 3 separate photos stitched together.

Rainy skies over the North Rim of Grand Canyon National Park Arizona. Viewed from Yavapai Point on the South Rim.

The cliff rim of Keyhole Sink in the Kaibab National Forest near Williams Arizona. This sink is an open ended sinkhole where water can flow out of it.

Captive ringtail (Bassariscus astutus) at sunset, Arizona Sonora Desert Museum, Tucson, Arizona, United States of America, North America

A butte of Bentonite clay along highway US89 north of Cameron Arizona in an area called the Painted Desert. This photo was taken thru the windshield of a vehicle in motion.

Captive ringtail (Bassariscus astutus) at sunset, Arizona Sonora Desert Museum, Tucson, 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

Ferruginous hawk (Buteo regalis) in captivity, Arizona Sonora Desert Museum, Tucson, 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

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

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

Black-chinned hummingbird (Archilochus alexandri), Sweetwater Wetlands, Tucson, 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

O'Leary Peak viewed from a Volcanic cinder rim slope in Coconino National Forest near Sunset Crater National Monument of Arizona.

Entering a construction zone while traveling on westbound I-40 between Flagstaff and Williams Arizona. Photo was taken from a moving vehicle thru the windshield. There might be some motion blur.

Approaching a steep grade on westbound I-40 near Ash Fork Arizona. Taken from a moving vehicle thru the windshield. There may be some motion blur.

State Route 64 heading north to Grand Canyon South Rim Arizona. Viewed thru the windshield of a moving vehicle. There may be some motion blur.

A sign along State Route 64 in Arizona marking 5 miles to Grand Canyon National Park. Viewed thru the windshield of a moving vehicle. There may be some motion blur.

Afternoon thunder shower, from Cape Royal Point, North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North 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

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

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 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