Near the Cascades, in the American Rockies.
The Bitterroot Mountains, including the Bitterroot Valley. The mountains were snow covered and could only be crossed during spring and summer months.
Bitterroot Mountain Range
It is the 70-mile-long by 15-miles-wide Bitterroot Valley with the Sawtooth Mountains at the southern end, Bitterroot Mountains to the west, and the Sapphire Mountains to the east.
Anything that they could find
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Lewis and Clark crossed the Bitterroot Mountains in search of a navigable water route to the Pacific Ocean as part of their expedition exploring the newly acquired Louisiana Territory. They hoped to find an easier passageway through the mountains to continue their journey westward.
Lewis and Clark crossed the Rocky Mountains during their expedition in the early 1800s. They also navigated other mountain ranges, such as the Bitterroot and the Blue Mountains, as they journeyed to the Pacific Ocean.
Idaho has a much higher average elevation than Mississippi, as it includes the Bitterroot Range and the Salmon River Mountains
Bitterroot National Forest was created in 1898.
Selway-Bitterroot Wilderness was created on 1964-01-01.
The area of Selway-Bitterroot Wilderness is 5,424.649 square kilometers.
The area of Bitterroot National Forest is 6,422.644 square kilometers.