A tunnel connecting the two larger caves in the hill; those that Jacob vented in the rear. The vents are still extant!
The orange bars were secured to the tunnel walls to support electric lines for the mine carts. Lower parts of the sand mines were allowed to flood. The water was perfectly still, and made for a mud so thick it could suck off your boots.
The east portal, looking toward Nopeming Junction and away from the US Steel ruins and Duluth’s ore docks.
A tunnel between the outside gate and the courtyard shared by the barracks.
Note the really old carvings in the mineral-stained sandstone on the walls and ceiling. This little cave was walled-off on one end, making me wonder what the area was for. Lighting is a set of three candles and two LED flashlights and a cigarette.
This heavy door opens directly into the missile vault and was used to load and unload the missile erector.
At this junction where Brewery Creek gets a breath of fresh air stands a kid holding a paintbrush: a Banksy (famous graffiti artist) ripoff.
Part of the Pillsbury tunnel that brought water back to the Mississippi River.
Hand-shooting 4×5 underground. Must be Kate Hunter.