Glacial potholes (a feature of glaciation) on the Deerfield River, Shelburne Falls, Massachusetts. United States.

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How? What? As the glaciers receded, fifty separate “pools” ranging from 6 inches to 39 feet in diameter were formed. The round holes were ground down by granite “by a whirlpool effect of water and gyrating stones of varied sizes.” As a result of the constant whirling of the granite stones, the potholes took on a remarkably symmetrical and round shape.

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Size: 5184px × 3456px
Location: Shelburne Falls, Massac
Photo credit: © Maurice Savage / Alamy / Afripics
License: Licensed
Model Released: No

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