The Palisades

Cliffs of volcaniclastic rocks belonging to the Eocene Absaroka Volcanics Group rises above the South Fork of the Shoshone along the Yellowstone Highway (US 14-16-20) in Shoshone National Forest, Wyoming. This group of igneous rocks are the remnant of a volcanic field that was active in northern Wyoming and southcentral Montana between 53 and 43 million years ago..

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