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Season 5 · Episode 1
0.045mJune 8, 2025
Fascinating water worlds do not only exist on the surface of the earth, water has also created breathtaking landscapes deep underground. It is a hidden world that is still largely unknown; after all, it is only accessible to experienced cave divers and exploring it is not without danger. Uli Kunz descends into the depths and explores the most spectacular subterranean water worlds on earth – from the Yucatán to the Bavarian Alps. It is a journey of discovery that provides deep insights into the formation of caves, rivers and landscapes.