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Frank Church—River of No Return Wilderness
The Frank Church—River of No Return Wilderness Area is a protected wilderness area in Idaho. It was created in 1980 by the United States Congress and renamed in 1984 as the ''Frank Church-River of No Return Wilderness Area'' in honor of U.S. Senator Frank Church.
At , it is the largest contiguous wilderness in the United States outside of Alaska. The Death Valley Wilderness is the largest single designated area but consists of numerous disconnected units.〔(【引用サイトリンク】publisher=U.S. Forest Service )〕〔(【引用サイトリンク】title=Wilderness.net search page )〕 The wilderness protects several mountain ranges, extensive wildlife, and a popular whitewater rafting river: the Salmon River.
==Description==
Together with the adjacent Gospel Hump Wilderness and surrounding unprotected roadless Forest Service land, it is the core of a 3.3 million acre (13,000 km2) roadless area.〔(【引用サイトリンク】title=Frank Church-River of No Return Wilderness )〕 It is separated from the Selway-Bitterroot Wilderness, to the north, by a single dirt road (the Magruder Corridor).〔 The wilderness contains parts of several mountain ranges, including the Salmon River Mountains, the Clearwater Mountains, and the Bighorn Crags. The ranges are split by steep canyons of the Middle and Main forks of the Salmon River.〔 The Salmon River is a popular destination for whitewater rafting,〔 and is colloquially known as the "River of No Return" for its swift current which makes upstream travel difficult. Most of the area is covered by coniferous forests, with dry, open land along the rivers at lower elevations.〔
While designation as a wilderness area in the United States generally requires the prohibition of any motorized machinery, the use of jetboats (On the Main Fork of the Salmon River) and several airstrips are permitted in this wilderness as grandfathered existing uses before the wilderness was designated.〔
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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