The St Regis River begins at Lookout Pass in which mountain pass on the Idaho/Montana border?
Lookout Pass Lookout Pass is a mountain pass in the Rocky Mountains of the northwestern United States. In the Coeur d'Alene Mountains of the Bitterroot Range, the pass is on the border between Idaho and Montana, traversed by Interstate 90 (formerly U.S. Route 10) at an elevation of 4710 ft above sea level.
White Cloud Mountains The White Cloud Mountains are part of the Rocky Mountains of the western United States, located in central Idaho, southeast of Stanley in Custer County. The range is located within the Sawtooth National Recreation Area (SNRA) and partially within the White Clouds Wilderness.