Learn more about the Meteor Crater near the Grand Canyon and how it may have created a paleolake thousands of years ago.

Submarine canyons are among the most spectacular and fascinating geological formations to be found on our ocean floors, but ...

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

The paper suggests that a dam created a 50-mile-long, 300-foot-deep paleolake with beavers' tracks in caves above the river, indicating a significant geological event possibly related to Barringer ...

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

Explore Arizona’s Painted Desert: colorful badlands, easy hikes, cultural gems, and top visiting tips for a one‑of‑a‑kind ...

Partial blue skies in the morning allowed many park visitors to ignore fires on the North Rim. By afternoon, ashfall made for ...

Starting just west of the Yavapai Geology museum on the canyon rim, visitors can walk backward in time from today toward the oldest rock in Grand Canyon, Elves Chasm gneiss (1,840 million years old).

On his first trip to the Grand Canyon Star Party, Dave Eicher joins thousands for a week of lectures, observing, and cosmic wonder.

Grand Canyon National Park has launched a satellite-based emergency alert system, which allows visitors to receive real-time alerts about flash flooding and other hazardous events in cell service ...

Hells Canyon might be deeper than the Grand Canyon, but it's barely 2 million years old, according to a new study.