River rafting enthusiasts will find thrills and spectacular views of awe-inducing cliffs while navigating the river that cuts ...

The Cambrian-age Tonto Group is a set of rocks famous for holding clues to the burst of new life that reshaped Earth 500 ...

These canyons now boast smooth, undulating rock ... in Glen Canyon, Arizona. This famous stop, one of the most photographed ...

Sometimes, as a river carves down through rock to make a canyon, it can leave behind small rock shelves on the canyon's walls. These flat terraces can end up covered with river sediments ...

Passengers travel over historic trestle bridges and through a 734-foot-long tunnel, following 20 miles of the Verde River. Views include Sycamore Canyon, red rock pinnacles and cliffs, Sinagua ...

I planned to hike and fish in the canyon where the trail descends several hundred feet down. Seeing the shimmering clear water, the breathtaking landscape and the many different geological rock ...