Viengxay Caves : Houaphanh, Lao
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The Viengxay caves in Houaphanh Province of north-eastern Laos are an extensive network of caves in limestone mountains. Four-hundred eighty of these caves were used by the Pathet Lao during the Second Indochina War to shelter from American bombardment.

Viengxay Caves : Houaphanh, Laos


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