During the last great Ice Age, the Great Missoula Floods carved out deep channels with notably steep walls and flat valley floors known as coulees. This includes the Washtucna Coulee which offers stunning views of the Snake River plateau, Devils Canyon and much more.
The Washtucna Coulee - Kahlotus Railroad Grade will take you past the dried basin of the ancient Lake Kahlotus and through to the eerie former railroad tunnel in Devils Canyon. For an 8.0-mile hike, after taking in the views at the other side of the tunnel, head back to the trailhead.
History enthusiasts can delight in remnants of the railroad. Those more interested in natural history can marvel at the geological impact of the Great Missoula Floods that remain even to this day. Along the way, spot some splendid plants and wildflowers, like sage violets, buttercups, desert parsley and more.