Magical Hang Sơn Đoòng [VIDEO]
Explore the marvelous beauty of Hang Sơn Đoòng - the world's largest cave in Vietnam.
Far over the misty mountains cold, To dungeons deep and caverns old..
Here's a wonderful video showcasing the subterranean exploration of Hang Sơn Đoòng, the largest cave known to man. A true lost world, the cavern has its own climate, river, and jungle. Sơn Đoòng Cave (hang Sơn Đoòng, "Mountain River cave" in Vietnamese) was found by a local man named Hồ-Khanh in 1991.