Rivers in Idaho

At the site of the most dangerous crossings on the Oregon Trail, a museum explores the complex history of westward migration in America.

An ordinary rancher stumbled upon one of the world’s largest collections of Pliocene horse fossils.

Some 46,000 years ago, a volcanic eruption led to a flooding event that carved this short canyon with steep vertical walls.

The "Grand Canyon of Southwestern Idaho" makes a spectacular gash across the flat Snake River plain.

An impressive waterfall nestled in the cliffs of Idaho's Snake River Canyon.

A creek tumbles over a series of step-like rocks to create this scenic water feature.