Höllochschacht
The Hölloch is an active water cave near Oberstdorf with a surveyed total length of 12,900 metres, a 76.6-metre-deep entrance shaft and a second access, the Plattenalpschacht, sealed since October 2005.
EspeleoWorld
Höllochschacht
The Hölloch is an active water cave near Oberstdorf with a surveyed total length of 12,900 metres, a 76.6-metre-deep entrance shaft and a second access, the Plattenalpschacht, sealed since October 2005.
Oberstdorf
Length: 12205 m · Depth: 452 m
Updated record
https://espeleoworld.com/en/c/hoellochschacht-oberstdorf
Information can change. Always verify coordinates, access, weather, and cave conditions before setting out.
The Hölloch is an active water cave near Oberstdorf with a surveyed total length of 12,900 metres, a 76.6-metre-deep entrance shaft and a second access, the Plattenalpschacht, sealed since October 2005.
Photos
© Kauk0r · CC BY-SA 3.0, https://creativecommons.org/licenses/by-sa/3.0/ · Wikimedia Commons · https://commons.wikimedia.org/wiki/File:H%C3%B6lloch_Eingangsschacht_Bergseite.JPG
Description
Morphology
The cave has a surveyed total length of 12,900 metres, extends horizontally over 1823 metres and has an elevation difference of 452 metres. The entrance shaft is 76.6 metres deep.
Hydrology
The Hölloch is an active water cave. Water enters within the shortest time during snowmelt or rain and can cut off the return route.
Progression
The first descent of the 76.6-metre-deep entrance shaft and the main passage, as well as their first survey, took place in 1906 by Hermann Paul from Innerschwende and the chaplain Xaver Lutz from Riezlern. Since October 2005 there has been a second access to the Hölloch, the so-called Plattenalpschacht. This allows an easier entry into the newer cave sections and will facilitate further research and surveying. However, the shaft is sealed and cannot be used for tourist purposes. A stable weather situation is absolutely essential for the descent. A descent should only be undertaken by trained, experienced cave explorers.
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Source: Geotopkataster Bayern (Bayerisches Landesamt für Umwelt) (www.umweltatlas.bayern.de), modified. CC BY 4.0, https://creativecommons.org/licenses/by/4.0/ Datenquelle: Bayerisches Landesamt für Umwelt, www.lfu.bayern.de · https://www.umweltatlas.bayern.de/mapapps/resources/reports/sb_geotope/generateBericht.pdf?additionallayerfieldvalue=780H002 · data as of 2026 · Contains information from Grottocenter (Wikicaves), grottocenter.org, made available under the Open Database License (ODbL 1.0, https://opendatacommons.org/licenses/odbl/1-0/), modified. · depth, length, names · obtained 2026-11-13 · https://grottocenter.org/ui/entrances/20269 · 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 · Source: German Wikipedia – article leads (cave descriptions) (de.wikipedia.org), modified. CC BY-SA 4.0, https://creativecommons.org/licenses/by-sa/4.0/ Wikipedia contributors (de.wikipedia.org), CC BY-SA 4.0 · Text by Wikipedia contributors (Hölloch (Deutschland)) · adapted by Espeleoworld (normalized, translated); the adaptation is licensed CC BY-SA 4.0, https://creativecommons.org/licenses/by-sa/4.0/ · description · obtained 2026-11-13 · https://de.wikipedia.org/wiki/H%C3%B6lloch_(Deutschland) · data as of 2026 · The derived data is available on request under the ODbL: [email protected]