Holloch Cave

1875210 km surveyedSwitzerland

CountrySwitzerland

RegionSchwyz

Discovered1875

Size/Depth210 km surveyed

About Holloch Cave

One of the longest caves in Europe with over 210 km of galleries. The name means Hollow Hole. A complex system of stream passages that floods dramatically after rain. Its river corridors rank among the most extensive in the Alps. First systematically explored in 1875 by Alois Ulrich.

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