Courtesy Grand Canyon Scenic Airlines The first thing some people do when visiting Las Vegas is immediately leave it—and go ...

A research team outlines how it identified and bestowed a moniker upon a previously unexplored 500 million-year-old Grand Canyon formation: The Frenchman Mountain Dolostone. The newly named rock ...

See 9 National Parks on This Picturesque Road Trip Through the American West — Including the Grand Canyon, ... Bryce is famous for the crimson-colored hoodoos (spire-shaped rock formations) ...

Grand Canyon of the Yellowstone is ranked #1 out of 17 things to do in Yellowstone National Park. See pictures and our review of Grand Canyon of the Yellowstone.

The Grand Canyon. A fresh analysis of rocks exposed in the side of the canyon is changing an 80-year-old textbook model and our understanding of the Cambrian Explosion.