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"A central Vietnam cave system famed as the world’s largest (crowned in 2009) that has become a bucket-list expedition; access is limited and trips are physically demanding, so only visitors with a certain level of fitness can participate. For many, the experience is transformative and acts as motivation to maintain or increase fitness in preparation for future expeditions." - Joshua Zukas
World's largest cave with underground jungles, rivers, and skylights
Tân Trạch, Bố Trạch District, Quảng Bình, Vietnam Get directions