son hang doong cave
in Vietnam is the largest cave in the world.
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#light#erosion#光#Vietnam#Water#underground_lake#黑暗#水#cave#formation#Rock#sondoong#水路#darkness#构成#watercourse#pit_cave
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bhabanipujaribhabanipujari
in Vietnam is the largest cave in the world.
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bhabanipujaribhabanipujari
