The rock spur with the ruins protrudes impressively into the glacial valley of the Danube. Today there is only an eight meter high and one meter thick wall right on …
The Mauerner caves are natural karst caves near walls, the place belongs to the market town Rennertshofen in the district of Neuburg-Schrobenhausen in Bavaria. Length of the caves about 121 m
These natural karst caves are also called the Mauerner Höhlen. The caves have been inhabited or at least used as a shelter since the Paleolithic Age. During excavations, stone tools …
So this is definitely not a bike highlight but one for MTB.
Since you can hardly ride a MTB, everything is so overgrown here (as of August 2019)
But it's definitely interesting.