A caver stands under a beam of sunlight passing through a doline, into the world's biggest cave, Hang Son Doong. i was lucky enough to join a 6 day expedition into the cave in April this year.

Phong Nha-Ke Bang National Park

Designated a Unesco World Heritage Site in 2003, the remarkable Phong Nha-Ke Bang National Park contains the oldest karst mountains in Asia, formed approximately 400 million years ago. Riddled with hundreds of cave systems – many of extraordinary scale and length – and spectacular underground rivers, Phong Nha is a speleologists’ heaven on earth.

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How to explore the world's largest cave, Hang Son Doong, in Vietnam

Jun 2, 2019 • 5 min read


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