The Medicine Bow Mountains are a mountain range in the Rocky Mountains that extend from northern Colorado into southern Wyoming. The northern extent of this range is the sub-range the Snowy Range. From the northern end of Colorado's Never Summer Mountains, the Medicine Bow mountains extend north from Cameron Pass along the border between Larimer and Jackson counties in Colorado and northward into south central Wyoming. In Wyoming, the range sits west of Laramie, in Albany and Carbon counties to the route of the Union Pacific Railroad and U.S. Interstate 80. The mountains often serve as a symbol for the city of Laramie. The range is home to Snowy Range Ski Area. The highest peak in the range is Clark Peak (), located in the Rawah Wilderness along the southern end of the range in Northern Colorado. Much of the range is located within the Medicine Bow National Forest in Wyoming. The highest peak on the Wyoming side is Medicine Bow Peak (). The range is drained along the western flank by the Michigan and Canadian rivers, tributaries of the North Platte in North Park. On its eastern flank it is drained by the Laramie River, another tributary of the North Platte. Geology The Medicine Bow Mountains resulted from continental compression during the Laramide Orogeny. Beginning about 70 million years ago, the Rockies began uplifting along thrust faults that broke up the Precambrian granite of Earth's crust. By 50 million years ago, all of Wyoming's major mountain ranges were elevated and the major basins defined. Rocks exposed along the flanks and peaks of the Medicine Bow Mountains span the Precambrian to modern, with the peaks composed of 2.4-2.0 billion year old Medicine Peak Quartzite. This rock was once a shallow marine sand deposit that has since been compressed and heated during burial, forming the metamorphic rock, quartzite. What may be traces of multicellular animals are preserved in this rock, making it of particular interest to paleontologists. The Cheyenne belt, the 1.78–1.74 billion year old suture between the Wyoming craton and the Yavapai province that formed as North America was assembled, is exposed in the Medicine Bow Mountains. Fauna Wildlife abounds in these mountains, with mule deer, elk, moose, black bear, mountain lions, coyotes, marmots, pika, Richardson's ground squirrels, bobcats, and lynx as well as a tremendous variety of birds. Brook and rainbow trout as well as grayling and golden trout