But nobody knew any of that until about six years ago.
The recently discovered cave has been touted as the largest in the world, although other caves vie for the title of longest (Mammoth Cave in Brownsville, Kentucky nabs that title with about 400 miles of passageways) and deepest (Krubera Cave in the nation of Georgia).
The lucky people who have entered Son Doong so far, like photographer John Spies, have emerged with some amazing photos.
Can’t shell out thousands of dollars for a tour? Take this virtual journey into Son Doong’s forests!
source: huffingtonpost.com By Suzy Strutner