MISSOULA — At a staggering 1,347,644 acres, the cross-state boundary Selway-Bitterroot Wilderness covers a significant portion of southwest Montana and eastern Idaho.

The Bitterroot Mountains form a rugged boundary between the states, carved by past glaciation. Idaho contains approximately 1,092,854 acres, while Montana claims about 254,790. The U.S. Forest Service manages all acreage, ranging across the Nez Perce-Clearwater, Bitterroot and Lolo national forests. 

A notable section of the Idaho side of the Selway-Bitterroot Wilderness borders the Frank Church-River of No Return Wilderness, separated only by U.S. Highway 12 and the Magruder Corridor.

The Magruder Corridor Road, built throughout the 1930s, winds 101 miles across the traditional homelands of the Nez Perce Tribe. It connect

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