Weippe Prairie is a "beautiful upland prairie field of about nine by twenty miles of open farmland bordered by pine forests" at 3,000 feet elevation in Clearwater County, Idaho, at Weippe, Idaho. It is the location in Idaho where the Lewis and Clark Expedition emerged from crossing the Bitterroot Mountains on the Lolo Trail. There they encountered the Nez Perce, who were attracted to the area by the abundant hunting, as well as the fields of camas flowers.