The origin story of Hells Canyon, North America's deepest river gorge, has long been unclear to scientists. But new research estimates it formed about 2.1 million years ago when a dramatic flood event ...

A research team outlines how it identified and bestowed a moniker upon a previously unexplored 500 million-year-old Grand Canyon formation: The Frenchman Mountain Dolostone. Can you believe that in ...

About 2,000 feet deeper than the Grand Canyon, Hells Canyon was rapidly carved when a lake spilled over about 2.1 million years ago, new research estimates. When you purchase through links on our site ...

We’d barely managed to snag the last few deck chairs on the back patio of the Grand Canyon Lodge on the North Rim. Sunset was still an hour away; I’d brought a book and was content to read while ...