The Hölloch is the 77-meter-deep entrance shaft into a 12,900-meter-long karst cave. It is not open to tourists. From the top, you can see a few meters into the shaft, but nothing more.
The Hölloch is located in the Bavarian part of the Mahdtal valley, in the municipality of Oberstdorf.

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Tobias

July 2, 2014

Hiking

The entrance to the second longest cave in Germany after the huge dumping pit. However, you do not see much except the first meters of the entrance shaft.

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Jan 🤠

July 1, 2020

Mountaineering

The Hölloch is a natural karst cave near the Swabian market town of Oberstdorf in the Oberallgäu district in Bavaria.

de.m.wikipedia.org/wiki/H%C3%B6lloch_(Deutschland)

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Elevation 1,500 m

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Wednesday 15 April

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Max wind speed: 12.0 km/h

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Location: Oberstdorf, Oberallgäu, Allgäu, Swabia, Bavaria, Germany

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