PRR symbol freight PR-4 for Camden, NJ has 76 cars behind the 2322, 2227, 2247 and 2641 (GP-35, two GP-30s and a U-25B). Tunnel is located east of the twin Spruce Creek Tunnels where, at this point in time, the railroad narrowed to two main tracks passing through Tussey (or Short) Mountain. No matter how spartan PRR's second generation power appeared, the keystone always stood out.