Phys.org

Why some Alaskan rock glaciers race downhill while their neighbors barely move

Why some Alaskan rock glaciers race downhill while their neighbors barely moveWorldPing

Two massive rock glaciers are creeping down mountain valleys in Alaska's Wrangell–St. Elias National Park. They sit only a few miles apart and formed under the same sky. One moves more than 5 feet (1.5 meters) a year.

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