A view looking into the engine service tracks at Frontier Yard. Photographer Mike Stellpflug Photo Date 08/01/77 Photo Location Name Frontier Yard See More Photos Conrail Scenic and Action Photographs Mike Stellpflug's Conrail Action On Location with Conrail Conrail's Chicago Line Conrail Facilities Conrail Engine Terminals Conrail Yards Frontier yard Locate To navigate, press the arrow keys. 42.903228, -78.760778