Heavy steel doors to isolate the underground magnetic separation mill from Eagle Mine’s main tunnel.
Roughly below the parking lot for the Rose Garden.
Hand-shooting 4×5 underground. Must be Kate Hunter.
A high-voltage tunnel sheathed in concrete dips below ground near a shell packing building that now stores fireworks.
One of the many exposed steam tunnels, unearthed by erosion and broken into by farm tractors and bored kids.
At the bottom of the stairs to the caves is this collection of brick arches. I wonder what this area looks like now that a new tenant has taken over this building.
A typical large mine tunnel. You can just make out the narrow gauge rail.
A ruined culvert near Oregon Creek, behind Old Main, the predecessor of the University of Minnesota-Duluth.
Sarah below Cascade Park. This space was destroyed when the park flooded.