East Beckwith Mountain is a prominent mountain summit in the West Elk Mountains range of the Rocky Mountains of North America. The peak is located in the West Elk Wilderness of Gunnison National Forest, west by south (bearing 264ð) of the Town of Crested Butte in Gunnison County, Colorado, United States.
East Beckwith Mountain is a laccolith, formed when magma intruded into Mancos Shale approximately 30 million years ago. Subsequently, the softer, overlying sedimentary rock has eroded away, exposing the more resistant igneous rock. East Beckwith Mountain is one of over a dozen laccoliths in the West Elk and adjacent Elk Mountains. Of these laccoliths, East Beckwith Mountain is noted for its distinctive glacial landforms. On the north side of this elongated, eastâÂÂwest oriented mountain, there are five glacially carved cirques with intervening arêtes, and moraines fan out from the mountain's base.