Single-unit trains on the Conrail main west of Altoona were not a common occurrence. Here a lone SD50 with an empty CWR train drops into Altoona at Slope.

A helper set shoves on a freight up the grade at Horseshoe Curve.

A helper set is in Dynamic Brake for tonnage on the downgrade for a loaded coal train around Horseshoe curve as a empty oil train passed heading westbound.

A helper set is in Dynamic Brake for tonnage on the downgrade for a loaded coal train around Horseshoe curve.

Rounding the bend at Horseshoe Curve a container train pulls hard on the grade.

Pushing upgrade, a helper set makes it way around Horseshoe Curve.

A SD-40 and SD-45 are shoving hard on the tail end of a westbound freight as it grinds its way up the eastern slope of the Alleghenies.

NS 7707 downgrade in Horseshoe Curve after a snow storm.

Battling the uphill grade in Horseshoe Curve, Norfolk Southerns “Southern” Heritage Unit leads train 25Z.

Norfolk Southern local train CB10 approaches CP-COVE in Altoona, PA where it will take the diverging track onto the Cove Secondary to switch customers.

Constantly Changing Complex. The scene at Norfolk Southern Corp's Altoona Shops has been dynamic throughout its history. The view on Thursday, November 19, 2020 shows a variety of of motive... (more)

An eastbound, loaded Penn Central coal drag descends Horseshoe Curve behind an eclectic lashup consisting of SD45-U33C-SD45-GP30-C425.

Conrail EMD SD45-2 6666 , previous owner/number Erie Lackawanna 3681, built 11/72.

NS 1145 Trash train from NY State to Ohio rolls around Horseshoe Curve