The Wind River Mountains are a result of erosional processes which carved the peaks after enormous compressional forces within the earth thrust a gigantic granite block skyward. Glacial action was the primary erosional force to act upon the Bridger National Forest eastern division , creating glacial cirques, kettles, U-shaped river valleys, hanging valleys, and over 1,300 lakes. Seven of the ten largest glaciers remaining in the contiguous United States still work upon the Wind River Mountains. Recreationists will find a multitude of opportunities within the Bridger National Forest eastern division . Backpackers and rock climbers explore the high country of the Bridger Wilderness.
Fishermen seek a variety of sport fish in the many lakes and streams.
In short the Bridger National Forest eastern division has something to offer everyone.