The World’s Biggest Cave
There’s a jungle in Vietnam gigantic cavern. A skyscraper would fit well. Listen to the author Mark Jenkins and Boyd Matson National Geographic talking about what might be considered the world’s largest cave, the 2.5-mile Doong Hang Son mountain cave or river, along the border with Vietnam and Laos. Is the world’s largest cave? More than three times the height of Niagara Falls, most Vietnam Mountain River Cave has remained untouched by man until now. Featuring vintage, NGC reveals for the first time in history, striking evidence that this could be the largest cave in the world. Together with renowned expedition leader Howard Limbert, Darryl Granger cave geologist discovered the formula of how the cave was so big.
The World’s Biggest Cave ,