The reconstruction of Conrail’s Allentown yard is underway in this December, 1978 view. The string of cars with the two Railbox cars is on or adjacent to the former main line which bisected the yard. The near tracks are the former Light Side (westbound) tracks, and the bare area on the far side of the main was the Heavy Side (eastbound) yard, where tracks will be added to the Light Side hump. Closest to the Lehigh River is the Allentown Runner, as the relocated main is known. The former LV main, locally known as the “hole”, is across the river.