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 ...

North America's deepest gorge, Hells Canyon, which slithers along the border of Idaho and Oregon, is a surprisingly new addition to the Earth's ancient landscape. A recent study suggests that a ...

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 ...

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 ...

For years, scientists were mystified by the origins of Hells Canyon, the deepest river gorge in North America. This massive natural wonder is a staggering ten miles wide and plunging more than 2,400 ...

OREGON, USA — Ready for a vacation that really gets away from it all? We go on the road to distant eastern Oregon on this week’s getaway where we find ourselves both in and atop the deepest gorge in ...

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 ...