The water pressure of a river can cut deep into a riverbed. Sediments from the riverbed are carried downstream, creating a deep, narrow channel. This process, known as downcutting, represents the ...

That’s according to a new study that looked at ancient river sediments that have long been hidden away inside the canyon’s caves, which now lie high above today’s Snake River. This new work is ...

Hells Canyon, the deepest river gorge in the United States, likely got rapidly carved 2.1 million years ago when a shifting landscape in Idaho caused a giant lake to start overflowing. That's ...

Hells Canyon, the deepest river gorge in the country, has always been a marvel for geologists, archeologists and travelers. But researchers are just now learning about the origins of the canyon — and ...

BLUE ROCK ‒ Not many people celebrate their 40th birthday with a grueling descent into one of the world's deepest canyons, but Blue Rock's Elli Alexander did. In March, she and her best friend, Audrey ...

An ambitious mission aims to protect one of the Mediterranean’s last great frontiers: Caprera Canyon, a vast underwater valley off Sardinia’s coast.

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