Lemhi
The Lemhi River flows through a mountain valley to join the Salmon, in the homeland of the Lemhi Shoshone. In 1805 Lewis and Clark crossed the divide and met a Shoshone band led by Cameahwait. The visitors hoped to continue west by water, but their hosts explained that the Salmon's canyons and rapids made the route impracticable. Cameahwait described the surrounding rivers and mountains, and the Shoshone provided horses for the expedition's difficult journey across the ranges.