page_title: Mount Sentinel
section_title: History
hierarchical_section_title: Mount Sentinel / History
caption_attribution_description: English: High water marker, Glacial Lake Missoula, Mount Sentinel, Missoula, Montana, 4 March 2016
context_page_description: Mount Sentinel, originally known as "Mount Woody," is a small mountain located immediately east of the University of Montana in Missoula, Montana. At a height of 1,958 feet and an elevation of 5,158 feet, Mount Sentinel also features the hillside letter "M", a large concrete structure 620 feet up its western face.
context_section_description: The University of Montana first received land on Mount Sentinel in 1902 when the Northern Pacific Railroad Company donated 40 acres at the foot and up the slope of the mountain. The U.S. Congress later turned over many acres of Mount Sentinel so that campus extended up the slope to the crest of the mountain, making the University of Montana the only university in the nation to own a mountain. In 2000, the city of Missoula also purchased 475 acres along the face of Mount Sentinel.
  Glacial Lake Missoula
  Between 15,000 and 13,000 years ago, a Pleistocene Ice Age glacier moved through the Purcell Trench in northern Idaho, damming the Clark Fork River. This glacial dam created Glacial Lake Missoula, a lake larger than Lake Erie and Lake Ontario combined. As the lake continued to grow, pressure increased on the glacial dam, ultimately causing the dam to fail. Water from the lake rushed westward at speeds between 30 and 50 miles per hour across Montana, Idaho, and Washington. The violent flow created by the draining of Glacial Lake Missoula left shoreline marks that are still visible on the face of Mount Sentinel and Mount Jumbo, a neighboring mountain to the north.
caption: Glacial Lake Missoula
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