"You swim as if in liquid fog. And into an abyss on top of that."

24 September 2015

National Geographic Czech Republic brings an exclusive report about the Czech "Mars", or the Hranice Abyss, and about a new world record.

"You swim as if in liquid fog. And into an abyss on top of that."

National Geographic Czech Republic brings an exclusive report about the Czech "Mars", or the Hranice Abyss, and about a new world record.

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"You swim as if in liquid fog. And into an abyss on top of that."

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