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Bob Marshall Wilderness
The Bob Marshall Wilderness Area is a Congressionally designated wilderness area located in western Montana in the United States. It is named after Bob Marshall (1901–1939), an early forester, conservationist, and co-founder of The Wilderness Society.〔(【引用サイトリンク】title=Bob Marshall Wilderness )〕 Bob Marshall was largely responsible for designation of large unroaded areas on lands administered by the U.S. Forest Service through promulgation of various regulations in the 1930s. The Bob Marshall Wilderness extends for 60 miles (95 km) along the Continental Divide and consists of 1,009,356 acres (4,085 km²).〔 As directed by the Wilderness Act of 1964, Wilderness remains roadless, with the only permanent structures being some old ranger stations and horse bridges. The Bob is the fifth-largest wilderness in the lower 48 states (after the Death Valley Wilderness, Frank Church—River of No Return Wilderness, Selway-Bitterroot Wilderness, and Marjory Stoneman Douglas Wilderness).〔(【引用サイトリンク】title=Wilderness.net search page )〕 The five ranger districts administering the Bob manage 1,856 miles (2,970 km) of trail that are open to foot and stock use only.
==Description==
"The Bob", as it is known by locals and nicknamed by the U.S. Forest Service employees, ranges in altitudes of 4,000 to over 9,000 feet (1,220 to 2750 m).〔 A long escarpment known as the Chinese Wall averages 1,000 feet (300 m) high from its base and extends for 22 miles (35 km).〔 Aside from numerous waterfalls, lakes, and dense forests, the wilderness is also prime Grizzly bear habitat and the U.S. Forest Service claims that the population density of this species is higher than can be found anywhere else in the U.S. outside of Alaska. The Bob is also home to many other large mammals such as moose, elk, black bear, mountain goat, bighorn sheep, wolverine, mountain lion, lynx, and wolf.〔 Bald eagles, osprey, pelican, and trumpeter swan are just a few of the bird species found. The dense old growth forests are dominated by Douglas fir, larch, and spruce. Forest fires have changed large areas in the wilderness complex in recent years.
Wilderness areas do not allow motorized or mechanical equipment including bicycles or hanggliders. Camping and fishing are allowed; fishing requires a state license; no roads are present and there is also no logging or mining in compliance with the Wilderness Act. Some administrative cabins constructed in the early 1920s afford refuge for trail crews and wilderness rangers. Wilderness areas within National Forests and Bureau of Land Management areas also allow hunting in season.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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