Two Grand Canyon-size features on the far side of the moon were likely formed in about 10 minutes after an unknown object ...

The Grand Canyon is one of the most iconic natural wonders in the world ...

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

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 ...

If you're looking for the ultimate outdoor photo spot, Utah has vibrant purple mountains - and they're near the state's mini" Grand Canyon too!

Two gargantuan canyons on the moon were carved by a hailstorm of rocks — and that’s good news for future lunar astronauts.

Recent visitors agreed that the Grand Canyon of the Yellowstone ... including its many colors and rock formations. Some visitors admired the canyon from the viewpoints, others hiked.

Top 4 National Parks in the USThe United States is home to some of the most stunning and diverse landscapes in the world, and its national parks offer unparalleled opportunities for outdoor ...

The body of a hiker who apparently had died in a fall from sandstone rock formations was found Sunday on a popular trail at ...

The gigantic cataclysm, which released energy 130 times more powerful than the detonation of the entire world’s atomic ...

From spectacular landscapes — hello, Havasu Falls — to artistic wonders, here are 10 of the most beautiful things to see in ...

"Whereas Arizona’s Grand Canyon was carved by water over the last 5 to 6 million years and from integrated paleocanyons that ...