Hinagdanan Cave

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Hinagdanan Cave is a cave on Panglao Island, in Bohol Province, in the Philippines. It is a naturally lighted cavern with a deep lagoon and many large stalactites and stalagmites.

The cave is part of the Chocolate Hills, a large, geologically unique karst region and protected natural monument.

The cave is lit by sunlight which filters through holes in the ceiling. The underground lake is a popular swimming spot, but it has been known to test for high levels of various pollutants, since it is fed by ground runoff.

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