The Rapid City, Black Hills and Western Railroad, also known simply as the Black Hills and Western Railroad and commonly referred to as the Rapid Canyon Line or the Crouch Line, is a defunct standard gauge freight railroad line that operated in the Black Hills in the U.S. state of South Dakota. The railroad became known throughout the area for its crookedness and later became a tourist attraction. It ran from Rapid City to Mystic for a distance of 36.043 miles. The railroad ceased operations in 1947.