The caverns sit atop the Grand Canyon Inn between Peach Springs and Seligman and are a worldwide tourist attraction.

Starting just west of the Yavapai Geology museum on the canyon rim, visitors can walk backward in time from today toward the oldest rock in Grand Canyon, Elves Chasm gneiss (1,840 million years old).

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

Beneath the Grand Canyon’s iconic layers, scientists have uncovered a fast-paced, 500-million-year-old tale of evolution that ...

That place actually exists, and it’s called Kanab, Utah. Tucked into southern Utah’s spectacular red rock landscape, Kanab ...

There's a lot more to do in Nevada than visit Las Vegas. Take a break from the crowded city and immerse yourself in nature at ...

If you plan to travel to Yellowstone National Park this summer, plan ahead to protect yourself and this wild and ...

Hidden in the heart of Gainesville lies a geological marvel that defies everything you thought you knew about Florida’s ...

The Columbia River Gorge is 10 minutes from Portland and home to the highest concentration of waterfalls in North America.

This one-day itinerary includes the best of Grand Canyon's South Rim, including El Tovar, Mather Point, Bright Angel Trail and Desert View Watchtower.

It's too dangerous. Grand Canyon National Park is one of the world's ultimate bucket list destinations, a geologic spectacle that must be seen to be fully appreciated. As vast as it is ...

But all of the Grand Canyon figurines have been discovered in deep caves in the Redwall Limestone stratum—by far the most difficult geologic layer ... on your maps—when all the waters receded ...