This isn't your typical boat ride. Your best summer experience in Idaho is this scenic jet boat tour in Hells Canyon. It's an ...

About 2,000 feet deeper than the Grand Canyon, Hells Canyon was rapidly carved when a lake spilled over about 2.1 million ...

Six sailors from the USS Idaho left their nuclear-powered fast attack submarine in Connecticut and boarded a jet boat bound for Hells Canyon this week during a jam-packed trip to the Gem State.

She believes the Idaho population in Hells Canyon, estimated at about 300 animals, can grow by tenfold. With help from a Wild Sheep Foundation grant, wildlife managers are also exporting the test ...

It's a warm, dry June afternoon as 13 students, a biologist and I stand on the edge of the deepest river gorge in North America, Hells Canyon, and stare in. The students are silent. Awestruck.

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.

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.

Geologists have uncovered compelling new evidence that reshapes the understanding of Hells Canyon, America’s deepest river ...

After decades of stagnation, Idaho’s Hells Canyon bighorn herd is growing. How high can it go? The wild sheep population in Hells Canyon, once stagnant, is now growing.