damn, it's sad they are not protecting the prehistoric cave paintings. Odd for Germany.
My pet theory is that this is a sacrificial site, intended to distract the public from better, less accessible sites in the area.
Plus, there is so much archeology here, it's just not practical to protect everything.
Germany has nowhere near the amount of "official" sites as France, yet everything I can see points to as many, if not more stone age habitats.