Ostenberghöhle
The Ostenberghöhle is a 622 m long cave at the upper edge of a quarry, discovered in 1991 after blasting work.
EspeleoWorld
Ostenberghöhle
The Ostenberghöhle is a 622 m long cave at the upper edge of a quarry, discovered in 1991 after blasting work.
Bestwig
Updated record
https://espeleoworld.com/en/c/ostenberghoehle-bestwig
Information can change. Always verify coordinates, access, weather, and cave conditions before setting out.
The Ostenberghöhle is a 622 m long cave at the upper edge of a quarry, discovered in 1991 after blasting work.
Photos
© DonGatley · CC BY-SA 3.0, https://creativecommons.org/licenses/by-sa/3.0/ · Wikimedia Commons · https://commons.wikimedia.org/wiki/File:Ostenbergh%C3%B6hle_-_Eingang_01.JPG
Description
Morphology
The Ostenberghöhle lies in a Sparganophyllum limestone belt only about 30 m thick. Its total length is 622 m; it is therefore the longest known cave in the Middle Devonian Sparganophyllum limestone.
Other details
The quarry below the cave is currently being backfilled. The cave is now closed and protected as a natural monument.
History
The Ostenberghöhle was discovered in 1991 after blasting work.
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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 · Source: Wikidata – cave items (Germany) (www.wikidata.org), modified. CC0 1.0, https://creativecommons.org/publicdomain/zero/1.0/ Wikidata (CC0 1.0) · data as of 2026