Geldloch
The Geldloch is a karst cave 42 m long, opened up by a borehole, sealed by the AKKH and lying next to a huge doline.
EspeleoWorld
Geldloch
The Geldloch is a karst cave 42 m long, opened up by a borehole, sealed by the AKKH and lying next to a huge doline.
Ennepetal
Updated record
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The Geldloch is a karst cave 42 m long, opened up by a borehole, sealed by the AKKH and lying next to a huge doline.
Description
Morphology
The Honsel beds are exposed in the Zuckerberg quarry. The clastic sequence is bounded at its base by a reef limestone that shows traces of karstification. Small-scale tectonics, mineralization and a basal hummocky relief can be seen in the quarry. The Geldloch is a karst cave 42 m long, opened up by a borehole.
Hydrology
After prolonged rain events there are flood outbursts (“Hungerbrunnen”).
Other details
The Geldloch is sealed by the AKKH. The beds in the Zuckerberg quarry are very fossil-rich; among others, corals, brachiopods, stromatoporoids, bryozoans, mussels, goniatites and plant remains occur.
History
In the Zuckerberg quarry there are traces of medieval to early modern quarrying; the stones were used at that time for the construction of Schloß Martfeld.
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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