The closure also means the end of REI's Signature Camps, including one that was planned to open this spring near Grand Canyon ...

Arizona may officially be the Grand Canyon State and for good reason. But there are other nicknames associated with the state ...

The vast valleys of Vallis Schrödinger and Vallis Planck demonstrate the incredible forces that shaped the face of the Moon.

Researches have determined that ejecta from an ancient asteroid. strike carved out the grand canyons (Vallis Schrödinger and ...

Federal judge dismisses Arizona GOP lawsuit challenging Biden's designation of Baaj Nwaavjo I'tah Kukveni National Monument ...

The Grand Canyon in Arizona is one of Earth's natural wonders, carved out over millions of years by the gradual erosion power ...

Our Moon continues to surprise us with amazing features. Scientists recently shared new information about two canyons that ...

With 22 national parks and monuments to its name, Arizona boasts some of the most astonishing landscapes in the country, from the Grand Canyon to the towering buttes of Monument ...

Whether you're hiking, boating or just taking a stroll outside, the great outdoors has its dangers, and that includes the ...

New Mexico's beautiful slot canyon, with its picturesque western views, dramatic white rock formations, and endless horizon, ...

I know what I’m talking about. It would be hard to argue with Grand Canyon National Park being considered the most beautiful park in Arizona, and even the nation. But beauty comes in many forms ...