Geology in Idaho

This U.S. natural reserve is an ancient spiritual place and rock climber’s paradise.

Idaho’s largest, deepest limestone cave is known for its quirky rock formations and bat population.

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.

Two geologically young and nearly circular volcanic subsidence craters, each about a half-mile in diameter, abruptly break the nearly featureless Snake River Plain.

Natural rock water slides hidden in the remote forests of northern Idaho.

A petroglyph map of the upper Snake River carved by prehistoric hunter-gatherers.

These black pillars of volcanic basalt seem to call mountain climbers with an unbreakable siren song.

A wild west land agreement was etched right onto this historic Idaho stone.

Home to the deepest rift anywhere on Earth.