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Geburtstagsröhrenhöhle

The Geburtstagsroehrenhoehle is a cave in a small quarry on the western edge of Holthausen, with a passage length of 15 m and a height difference of 3 m.

Hagen

The Geburtstagsroehrenhoehle is a cave in a small quarry on the western edge of Holthausen, with a passage length of 15 m and a height difference of 3 m.

Characteristics

  • Type: Cave
  • Municipality: Hagen
  • Record updated:

Caves are protected biotopes (§30 BNatSchG). Caves used by bats as winter quarters must not be entered from 1 October to 31 March (§39(6) BNatSchG), except show caves and their developed parts.

Location

On the western edge of Holthausen lies a small quarry in which Middle Devonian massive limestone was extracted. Adjacent to it there are also natural cliffs of limestone.

Map

Approximate position

Entrances

Always verify coordinates and access conditions before setting out.

  1. Geburtstagsröhrenhöhle

    51.351185, 7.544520
Download all entrances as GPX

Description

Morphology

In the quarry lies the Geburtstagsroehrenhoehle, with a passage length of 15 m and a height difference of 3 m.

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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