Walk through Vietnam’s Son Doong, a surreal cave so big that a 747 could fly through it.
Imagine, in the 21st century, discovering a wonder equal to Mount Everest or the Grand Canyon. It happened, in 2009, with the discovery of the largest cave in the world. It’s in Vietnam and they call it Hang Son Doong, “Mountain River Cave.” Intrepid British explorer, Peter MacNab, led the first team through this amazing … Read more