The National Bison Range was established in 1908 to help save the American Bison from extinction. Today populations are secure and bison roam in parks, refuges, and on private ranches throughout the country. The Bison Range is a National Wildlife Refuge rather than a park, with designated roads and trails open to people while the rest is reserved for wildlife. The 19-mile Red Sleep Mountain Drive climbs 2,000 feet through four habitat types and offers many scenic vistas along a one-way gravel road with tight turns, steep downgrades, and no guardrails. Its grasslands of drought-resistant native bunch grasses provide forage for bison and other grazers, including deer, elk, and pronghorn antelope, and its riparian areas include river bottom woodlands of Black Cottonwood and Rocky Mountain Juniper sub-irrigated by the stream.