Stock Photo - Hranice Abyss (Hranicka propast) is the deepest flooded pit cave in the world. It is a karst sinkhole near the town of Hranice, Czech Republic, August 23, 2023. (CTK Photo/Drahoslav Ramik)

Stock Photo: Hranice Abyss (Hranicka propast) is the deepest flooded pit cave in the world. It is a karst sinkhole near the town of Hranice, Czech Republic, August 23, 2023.

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