Teton Range

Flanked by rock formations more than 2 1/2 billion years old, these 3 granite peaks rose up less than 9 million years ago, very new as mountains go, and they are still rising. Hinged at the base of the ridge before you, a block of rock 40 miles long broke along a fault line, where the rock tipped up to become the top of the ridge. During the past 1/4 million years, extensive glacial ice sculptured these spectacular peaks from the hard, resistant granite.

Idaho · United States