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

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

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

The gigantic Yellowstone Grand Canyon, lined with volcanic rock. With all the effects of hydrothermal activity, river erosion ...

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 ...

The public lands surrounding Grand Canyon National Park contain high concentrations of uranium ore. Mining bores deep into vertical rock formations called “breccia pipes,” making uranium soluble to ...

The body of the 37-year-old man, who had been visiting the park with his mother, was found on a popular trail on Sunday, the ...

Two gigantic canyons on the moon — both deeper than the Grand Canyon — were carved in less than 10 minutes by floods of rocks ...

The Grand Canyon's three Inner Corridor trails had to be shut after workers discovered dangerous chlorine gas at the Roaring Springs waterfall ...

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

Because the Grand Canyon is a national park ... offering views of the canyon's rock formations. Yaki Point and Grandview Point are popular panoramic lookouts along the drive.

With nearly five million tourists annually, Arizonas Grand Canyon is one of the most popular national parks in the USA. Its world-famous for its colorful rock formations, rich geological history ...