Höhlenschacht Hülloch
A shaft-shaped cave formation, known as "Hülloch" or "Höhlloch", formed by the dissolution of Devonian limestones.
EspeleoWorld
Höhlenschacht Hülloch
A shaft-shaped cave formation, known as "Hülloch" or "Höhlloch", formed by the dissolution of Devonian limestones.
Marienheide
Updated record
https://espeleoworld.com/en/c/hoehlenschacht-huelloch-marienheide
Information can change. Always verify coordinates, access, weather, and cave conditions before setting out.
A shaft-shaped cave formation, known as "Hülloch" or "Höhlloch", formed by the dissolution of Devonian limestones.
Description
Morphology
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.
Other details
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.
History
During the 30-year war, the cave served as a refuge for bands.
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Nearby caves
Source: Geotopkataster Nordrhein-Westfalen (Geologischer Dienst NRW) (ogc-api.nrw.de), modified. Data licence Germany – attribution – version 2.0 (dl-de/by-2-0), https://www.govdata.de/dl-de/by-2-0 Geowissenschaftliche Daten: INSP-GeotopeinNRW @ Geologischer Dienst NRW · data as of 2026