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

View of Roaring Springs Canyon along the North Kaibab Trail at 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

Looking back up the first leg of the North Kaibab Trail at Grand Canyon North Rim, UNESCO, 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 7th switchback 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

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

The 18th 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

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.

Ancient wall of the Fort Silver Indian Ruins overlooking Silver Creek Canyon in Agua Fria National Monument of Arizona

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

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, Black Canyon City, USA

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

Path leading to a scenic overlook in the Agua Fria National Monument near the abandoned Richinbar Mine, Arizona, USA

The Agua Fria River Canyon in the Agua Fria National Monument north of Black Canyon City Arizona, USA

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

Remnants of the Richinbar Mine within the Agua Fria National Monument, Black Canyon City, Arizona, USA

Remnants of the Richinbar Mine within the Agua Fria National Monument, Black Canyon City, Arizona, USA

Remnants of the Richinbar Mine within the Agua Fria National Monument, Black Canyon City, Arizona, USA

Remnants of the Richinbar Mine within the Agua Fria National Monument, Black Canyon City, Arizona, USA

Remnants of the Richinbar Mine within the Agua Fria National Monument, Black Canyon City, Arizona, USA

Remnants of the Richinbar Mine within the Agua Fria National Monument, Black Canyon City, Arizona, USA

Remnants of the Richinbar Mine within the Agua Fria National Monument, Black Canyon City, Arizona, USA

Remnants of the Richinbar Mine within the Agua Fria National Monument, Black Canyon City, Arizona, USA

Ancient Indian Ruins near the historic Richinbar Mine in the Agua Fria National Monument, Black Canyon City, Arizona, USA

Open mine shaft at the Richinbar Mine within the Agua Fria National Monument, Black Canyon City, Arizona, USA

An abandoned cabin next to an active cattle corral in the Agua Fria National Monument, Black Canyon City, Arizona, USA

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

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