The Hohle Stein near Alfdorf-Vordersteinenberg in the Upper Gellbach Valley is designated as a geotope. The erosion cave was created in the so-called cave sandstones of the upper Stubensandstein formation. …
Please turn right onto the footpath just before the castle. Then after a few meters you will find the Lourdes Grotto, somewhat hidden on the left. It is one of …