Thousands of hikers take on the Grand Canyon’s Rim-to-Rim trek every summer. This year, however, a major trail closure has ...

Dam maintenance and non-native fish reduction efforts led the government to reject an environmentally restorative flood in the Grand Canyon.

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

The Bureau of Reclamation has said it will not flood the Grand Canyon this spring because of ongoing work around the Glen ...

Hells Canyon is the deepest river canyon in the United States. Now scientists have solved the mystery of when it formed.

With such ancient history, there are tales and myths to be told as we walked through the swirling sculpted corridors ...

On a scorching day in June 2013, the Grand Canyon discouraged hikers from making a long trek to the bottom because there would be no potable water ... a few times a year. Around when Cockrum ...

The U.S. Supreme Court on Monday rebuffed a bid by mining interests to overturn a 20-year ban on extracting uranium from about a million acres around Grand ... and deep aquifers,” as water ...

It's a testament to Mother Nature's strength and power, so vast and spectacular that it's often considered the "Grand Canyon of Washington."The Grand Coulee in Washington is an ancient river bed gorge ...

Formed over thousands of years of erosion caused by hydrothermal activity, water and other natural forces, the Grand Canyon ... The canyon is anywhere from 800 to 1,200 feet deep and features ...

Hells Canyon, which is on the border between Oregon and Idaho, is almost 8,000 feet deep ... and melting glaciers around this lake would have resulted in a lot more water heading into it, explains ...

Just after 8 o’clock one spring morning, 2,000 feet below the rim of the Grand Canyon, Nate Chamberlain ... where there is not one drop of water for man or horse.” He added, perhaps ...