Höhlenschacht Hülloch

It is a shaft-shaped cave formation, known as "Hülloch" or "Höhlloch", formed by the dissolution of Devonian limestones. The cave, whose passages are 25 m long in total and whose deepest point lies 7 m below the entrance, lies in the boundary area of the Hobräcker Schichten. The grey flaser limestones dip at 25 gr. toward NW.

The karst cave lies in the boundary area of the Hobräcker Schichten. Numerous other sinkholes lie in the immediate vicinity. The entire area of the Schieferstein-Kuppe was designated as a ground monument. Besides the above-mentioned Hülloch, this includes further smaller caves (partly bat biotopes), sinkholes and several abandoned, partly heavily decayed, sometimes very old quarries. Overall, it is an important flora and fauna biotope.