This was a mine for fluorit and barit in Thuringia, closed since some 20 years. The entry is a small hole in the forest, between roots of trees, even hard to find, when you know where you have to look for. Inside is a mysterious little world of red rock and, clear water and glittering crystals.

A glance onto the Geiger Counter: The radioactivity inside the mine is 10 times as high as outside.