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Frank Church-River of No Return Wilderness

Largest Wilderness Area Outside of Alaska

Wilderness Area in Rocky Mountains, Salmon River Mountains in ID, MT

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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 2.367 million acres (9,580 km2), it is the largest contiguous federally managed wilderness in the United States outside of Alaska, which is second in area only to the contiguous area of the state-managed Adirondack Park in upstate New York, which contains some 46% of its state-managed area of 9,375 square miles (24,281 km2.) as wilderness parkland. The Death Valley Wilderness is the largest single designated area but consists of numerous disconnected units. The wilderness protects several mountain ranges, extensive wildlife, and a…

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Wilderness Area