Abandoned mine Ofenkaulen
Around the Ölberg

Ofenkaulen

The Ofenkaulen are a tunnel system, former underground tuff quarries in the Siebengebirge. Today, they are a winter quarters for bats. When you are halfway up the L 331 motorway that leads from Königswinter to Ittenbach you see the driveway to Mount Petersberg on your left side and a bus station on your right side.