Mammoth Glacier is in the Bridger Wilderness of Bridger-Teton National Forest, in the U.S. state of Wyoming.

Mammoth Glacier is the largest glacier on the west side of the Continental Divide of the Wind River Range and occupies a large, north facing cirque on the north slopes of Twin Peaks and just west of Mount Woodrow Wilson.

[2] Mammoth Glacier is part of the largest grouping of glaciers in the American Rocky Mountains.

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