Klutwan Glacier from 30,000 Feet

Geology 101: Medial Moraines


Klutwan Glacier runs from the north side of the Wrangell-St. Elias Mountains, south of the Alaska Highway. Historically, it has been subject to surges and retreats, but in recent decades it has shown exclusively retreats. But it’s still a big mountain glacier, and beautifully illustrates moraines, the long strips of gravel and mud that run…