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| Luray Caverns, US |
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| Augusta, US |
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| Melisani Lake, Greece |
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| Wookey Hole Cave, UK |
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| Aktun-Chen, Mexico |
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| Wieliczka Salt Mine, Poland |
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| Cave Sopot-Boka Kotorska, Montenegro |
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| Cave Lake near Margaret River, Australia |
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| Lake Souterrain St. Leonard, Switzerland |
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| Austria |
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| Mirror Lake, Czech Republic |
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| Reed Flute Cave, China |
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