Captured with a Fuji GX680 camera, 80mm lens, T-Max 100 film. Some tilt was applied to control focus. It was very dark in there, and focusing required the use of a flashlight.

The Pennsylvania Avenue Subway was built to provide a sub-grade freight connection between the Reading Railroad's main line and its "City Branch". It served the Baldwin Locomotive Works' Callowhill plant and the Philadelphia Inquirer's printing plant, among other Center City industries. Abandoned in the 1980's.