Hochkarschacht, Natural karst cave in Göstling an der Ybbs, Austria.
The Hochkarschacht extends through 650 meters of limestone passages, reaching depths of 133 meters beneath the mountain surface.
The natural entrance was discovered in 1923 by Michael Müllner, but systematic exploration only began in 1964 using thirty rope ladders.
The Austrian Federal Monuments Office designated the cave as a protected natural monument in 1966 due to its scientific importance.
Guided tours lasting 90 minutes require advance booking and accommodate groups between 6 and 25 participants, with a minimum age requirement of six years.
The cave entrance sits at 1,620 meters above sea level within an active ski resort, making it an unusual geological formation in the region.
Location: Göstling an der Ybbs
GPS coordinates: 47.71690,14.91500
Latest update: March 3, 2025 01:12
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