Explore the World’s Largest Cave: Hang Son Doong, Vietnam

How big is Big? For us, it’s probably 490 ft in depth and over 9 kilometers in length. Yup, the largest cave in the world for a reason, Hang Son Doong is probably one of the best and newest discoveries in the world. In 1991 Hồ Khanh stumbled upon the massive entrance of the cave.…
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