A rust colored phenomenon made of colored limestone. The forms of that Rocks are shaped by the rainwater and look fantastic. Unfortunately, over time, the shapes get smaller and smaller so in some Years ago, the rain decomposes the beautiful spot on earth.
It is a kind of sinkhole where on the right side of the gorge you can see a variety of red-colored, partially decomposing stalagmites. The corrosion of the rocks by Regenwssser is almost unique in the world. Most people see such a spectacle only in the Lower-Earth caves. Unfortunately, from year to year, the reddish colors are getting paler.