After reading many reviews of Big Thunder Gold Mine, I was unsure what to expect. It was one of the highlights of our trip! Our tour guide was wonderful, gave lots of interesting information and was really funny. Our 6 and 10 year old loved it! The tour itself gave you insight to life in a mine and understanding the process. We also panned for gold at the end of the tour, which guaranteed you to find gold, it was so much fun! The tour guide hung out for at least an hour to help show tips to panning. I highly recommend this stop in Keystone!