More than one and one-half centuries after Lewis and Clark crossed the Bitterroot Mountains, the country immediately across the river at this point remains the Selway – Bitterroot Wilderness, whose primitive character suggests much of the land in the days of the Lewis and Clark expedition. Its one-million acres offer the challenge and beauty of a wilderness experience and the opportunity, on foot or horseback, to see a fresh, unaltered land as Lewis and Clark did. The Selway – Bitterroot Wilderness was classified in 1963 by the Secretary of Agriculture and is administrated by the United States Forest Service.