Hells Canyon is North America's deepest river gorge, measuring nearly 8,000 feet deep and spanning 10 miles from the peaks of the Seven Devils Mountains in Idaho to the eastern Wallowa Mountains in Oregon. This landscape of extremes was preserved through the establishment of the Hells Canyon National Recreation Area in 1975. In a notable bipartisan effort, Governor Cecil D. Andrus worked with U.S. Senator James A. McClure to draw the Idaho boundaries for the recreation area, helping protect more than 1,000 square miles in Oregon and Idaho. At the southern end of Hells Canyon, the Cecil D. Andrus Wildlife Management Area sits above Brownlee Reservoir, encompassing 24,000 acres and providing important winter habitat for deer, elk, and other wildlife.