Had the chance to visit Idaho Springs CO a few weeks ago, we visitied the mines and went on the tour, it was a lot of fun.

First here is audio of the miniature hammers on the oar. It is a replica very small version of what was used back in the day.

Finally, we were in the mines, the acoustics/reverb is very cool, of course Binaural so ware headphones. Here is part of the story that the tour guide told, and, your like, uh? Lets, get, out of here!!! Crazy stuff!