 The top points are located where "top road" and "middle road" join.Beyond this two "T" bridges and a stone arch are located at the entrance to the "wing" where the train terminated before proceeding to the "middle road" Located on the "middle road" is number one and number two viaduct and number one tunnel and a cutting which was originally proposed to be number two tunnel.At the end of "middle road" is the bottom "wing".