Aurora from Wisconsin Point Superior Entry’s lights, backlit by the aurora borealis. In the distance, you can see the lights of Two Harbors. Similar Images ...based on the tags: aurora-borealis, dark, lake-superior, lighthouses, stars, water... One thing that struck me as a midwesterner in the South was the vines. They seem to be able to completely cover a building when left alone for a few decades. Demolition about 50% complete. This ruin was once the Toltec Mine, a producing gold and silver claim that operated into the 1940s. Instead of a pit in the floor, now there is an oversized chessboard here. Part of the Pillsbury tunnel that brought water back to the Mississippi River. From atop a concrete slap that seals the old path of Mine Shaft #3, I loop up into the hoisting room. A winding flue between the ovens for Furnace 6, capped with sketchy catwalks. Like a grave marker, a single post remembers where Dock 3 stood on the bay. Behind one of the kitchens is one of the few pieces of furniture remaining. Beside it, a small electric space heater–small by 1970s standards.