40-story skyscrapers would fit comfortably inside Son Doong, a breathtaking 5.5-mile long cave—reportedly the largest in the world—located in central Vietnam, and it’s open to the public for the first time. For $3,000, the cave’s original explorers can give you (alongside your porter) the grand tour around its jungles, river valleys and 260-foot stalactites. But only if you’re one of the first 220 adventurous travelers to book!

Inside Soon Dong

Caves pearls

Camping in Son Doong

Caving in Son Doong
Photos courtesy of Ryan Deboodt
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