From Horseshoe Bend to Grand Canyon's Mather Point to the Chiricahua Mountains, these are the Most Treasured Views in AZ.

A geologic cross section of the Grand Canyon, described along the Trail of Time, includes the following layers from youngest to oldest: Kaibab Formation — 270 million years ago. Toroweap ...

Journey across continents to witness nature’s greatest masterpieces,from the vast depths of the Grand Canyon to the vibrant underwater realm of the Great Barrier Reef. This video showcases the ...

Visitors to backcountry areas of Grand Canyon National Park can now subscribe to a new emergency warning system that works in ...

Johnny MacLean, Ph.D., the new chancellor at Montana Technological University, described receiving a warm welcome on campus ...

This isn't your typical boat ride. Your best summer experience in Idaho is this scenic jet boat tour in Hells Canyon. It's an ...

When you want to travel this summer without going over budget, there are a few destinations that you may have overlooked in ...

The five newest National Recreation Trails in six states add nearly 400 miles to the network of more than 1,300 trails.

About 2,000 feet deeper than the Grand Canyon, Hells Canyon was rapidly carved when a lake spilled over about 2.1 million ...

Just west of Flagstaff in Bellemont, Arizona, The Barefoot Trail offers a unique outdoor experience that invites visitors to shed their shoes and reconnect with nature.

Trump officials say presidents can abolish monuments created by predecessors, and California's newest ones — Chuckwalla and Sáttítla Highlands — are vulnerable.

About 2,000 feet deeper than the Grand Canyon, Hells Canyon was rapidly carved when a lake spilled over about 2.1 million years ago, new research estimates.