The trail switchbacks down the Tapeats ledges, cutting all the way into the Grand Canyon’s basement rock — the ancient Vishnu Schist. When you reach the east arm of the creek, look for cairns marking ...

This lightning bolt-like trail gashes its way through the dark cliffs of 2-billion-year-old Vishnu Schist, the oldest rock in the Grand Canyon. Avoid hiking this section during the hottest part of the ...

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

At about 8 a.m., February 10, emergency crews at the Grand Canyon were notified of a report of a broken rock wall and ...

The body of a California man, a car, and various car parts were found 1,000 feet below Grand Canyon's South Rim.

The body of a 20-year-old California man was recovered at the Grand Canyon National Park on Feb. 10. The National Park Service confirmed Grand Canyon dispatch received a report of a broken rock wall ...

Two gorges on the Moon that are deeper than the Grand Canyon were carved out in less than 10 minutes by space rocks travelling at the speed of a bullet, astronomers have revealed. The Moon canyons ...

Two gorges on the Moon that are deeper than the Grand Canyon were carved out in less than 10 minutes by space rocks travelling at the speed of a bullet, astronomers have revealed. The Moon canyons, ...

Officials said the investigation into the man's death is ongoing and will be coordinated with the Coconino County Medical ...