Here in this forrest you will find a natural formed shelter on a rock. The path is a part of the Müllerthal-trail. You can park your car at N°49 44.733 / E006° 13.745. Enter the forrest on that little path at N49° 44.748 / E006° 13.745. Arrived at the rock, climb up and search for the deapest place. There in the corner you will find for what you are coming for. Some wall paintings will show you the right place. Some climbing is necessary, but no special gear is neaded. Use the spoiler, coords can vary up to 10 meters. Enjoy the place and it's environments.