The tunnels can be accessed from Warrington Station (southwest of Tenpenny Tower) and the Warrington trainyard (west of Tenpenny Tower). From the entrance in Warrington trainyard, the tunnels lead past some radioactive waste before leading into a maintenance area, before going into another tunnel. Down the tunnel, the path splits. The southbound split leads past some radioactive waste to a small closets filled with supplies. The northbound split leads through another maintenance area. Down some stairs is the entrance to Warrington Station.