Once you reach Oxbow, Ore., you’ll cross back into Idaho and continue north. Just past Hells Canyon Park, you’ll come to the base of the Kleinschmidt Grade (Forest Road 050).

The Hells Canyon Scenic Byway allows you a drive-in approach to see Hells Canyon and there’s no finer perch than the Hat Point Fire Lookout Tower where it is 7,000 feet to the Snake River far below.

Hells Canyon, the deepest river gorge in the United States, was carved just about 2.1 million years ago — making it much younger than the Grand Canyon. Matthew Morriss hide caption ...

A river rafting trip to Hells Canyon, the deepest canyon in all of North America, ... After a few miles, we pulled over to get a bird’s-eye view of our first, Class IV rapid of the day.

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.

Hells Canyon might be deeper than the Grand Canyon, but it's barely 2 million years old, according to a new study. A geologist searched remote caves to find the right evidence.

Hells Canyon, the deepest river gorge in the United States, was carved just about 2.1 million years ago — making it much younger than the Grand Canyon.

BEAR, Idaho (AP) -- The truck’s tires on the driver’s side were inches from the edge of a 1,000-foot dropoff while the side-view mirror on the passenger side came pretty ...