
Northeast
Hollenloch Nature Reserve: Karst Cave Systems and Protected Limestone Woodland Geography
Exploration of subterranean geology and regional karst habitats
Hollenloch stands as one of the longest and deepest cave systems within the Sauerland, developed inside dense Upper Devonian reef limestone. This protected site integrates surface karst features like the Schwalgloch with specialized forest ecosystems, providing a vital subterranean refuge for diverse bat species and a rich record of prehistoric human activity.
- Area
- 0.032 km²
- Established
- 2001
- Relief
- Upland
- Climate
- Temperate















