What is another name for  a defunct standard gauge freight railroad line that operated in the Black Hills that ran from the second-largest city in South Dakotafor a distance of 36.043 miles? 
Rapid City, Black Hills and Western Railroad: 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.
i don't know