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Son Doong Caves – Exploring the world’s largest caves

National Geographic funded the exploration and 3600 photo capturing of the world’s largest caves in Vietnam, the Hang Sơn Đoòng caves.  The result was spectacular. Official site: http://www.sondoongcave.org/ National Graphic Exploration results: An interactive online tour (360 pictures) : http://www.nationalgeographic.com/news-features/son-doong-cave/2/#s=pano48 YouTube (preview) :

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