Bricked-Off Doorways in Tunnel The tunnels were full of bricked-up doorways. I wonder how many rooms under there are totally sealed from the outside world… Similar Images ...based on the tags: arrows, bokeh, dark, hallways, long-exposures, signs, stencils... A rail maintenance building. I liked the color of the tree against the peeling red paint. A taste of Superior culture. The boiler doors are beautiful, and feature the name of the smelter and mine company. If you like these, check my article on the Mitchell Yards of Hibbing, MN. A Merrill Piano from Boston, in the Recreation Room of the Front Dorm. Too big to be scrapped, to simple to be auctioned. It waited for the demo crews and demo cranes to arrive. Standing on a caustic tank with my head out a roof hatch, I look at the sign of the last brand to be produced here. Around the corner from the old boiler room. Call me angsty, but I like it. Found in the Auxiliary Hospital. Below Dock 2 is a set of fire pumps.