New research links the impact at Meteor Crater to a Grand Canyon landslide that may have created an ancient lake 56,000 years ...

Explore every nook and cranny, both in and atop the deepest gorge in America: Hells Canyon of the Snake River.

Built nearly 100 years ago, the remote lodge offered majestic views of one of our finest national parks before it burned in ...

A massive landslide would have dammed the Colorado River, forming a deep lake that has since dried up. A meteorite impact ...

Jamie Coffin recalls being one of several people flown out of the Grand Canyon because of a chlorine gas leak.

Researchers have found a link between two geological events in iconic locations of the U.S. Southwest that scientists ...

A new study suggests ancient wood floated into a cave far above the Colorado River when a meteorite-induced earthquake ...

Grand” is a weighty word to carry at the front of your name. It makes a remarkable promise; one that New York’s Grand Central ...

Congressman Paul Gosar is demanding answers after a wildfire destroyed the Grand Canyon Lodge and more than 70 structures.

Based on remarkably similar ages, the meteor impact that created one of Arizona's most recognizable landmarks and wood and sediments found in caves high up in the walls of the Grand Canyon, a new ...

Is Arizona's most beautiful place an iconic red rock butte, a blue-green waterfall or an otherworldly cave formation? Vote in our stunning views poll.

A fast-moving wildfire destroyed a historic lodge and dozens of other structures on the Grand Canyon’s North Rim, forcing ...