Looking towards the outside world, from inside the South Lake mine. This is one of the most spectacular open shafts that I've ever seen. It's not just open... it's WIDE open. This is partly because the old mining companies which explored this area liked to drill lots and lots of holes in the ground, anywhere that looked promising. But it's also because those holes have collapsed and combined over the years, forming some much larger (but less safe) openings into the mines.