The largest accessible tunnel on the Belger Bach!
To be more precise, above the Belger Bach on an unused forest path. A stacked dry stone wall draws attention to the wood of the pit timbering next to it, which was filled with a mound of earth, but which is easy to overcome.
The well-accessible tunnel then leads into the mountain until a tunnel leads to a large excavation chamber on the left, which is already largely filled with carefully stacked excavation material. It snakes its way further into the mountain to a huge dome, which is made up of several mining chambers on several levels (over 10 meters high and several hundred square meters of floor space).
From there, a tunnel leads a few meters further into the mountain.