Tunnel Cart A light-painted portrait of one of the few remaining carts that moved everything from fresh eggs to soiled laundry through the tunnels. Related Similar Images ...based on the tags: basements, carts, favorites, fences, light-painted, lights, long-exposure, pipes, shadows, stonework, tunnels... Look at the floor–do you see the hole? That goes down a lonnnnnng ways. The powerhouse had two elevated tracks behind it, one for coal and one for deliveries. I wonder when fluorescent lighting was added. The old gate sign, leaned against one of the terminal elevators. Shadows cast by the ropes, counterweights, and backdrops. One level below where the cotton was nitrated, the fumes must have been powerful. This floor had several massive ventilation fans in its walls. A typical room in Birtle. In case power was lost, this manual signal could direct trains on and off the taconite trestle. Turning the pole would change the color of the light on top and the shape of the metal flags. Where staff could sleep.