Deepest cave [Freshwater]

Last updated: October 14, 2017 at 2:02 am

Hranická Propast (Hranice Abyss), Czech Republic, 404 m (1,325 ft) – Discovered by Krzysztof Starnawski (Poland) in 2016.

Pozzo del Merro, Italy, 392 m (1,286 ft).

National Geographic News | Exclusive: Deepest Underwater Cave Discovered, September 29, 2016

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