A New York City Block Could Fit in This Cave
Would you believe that this cave could house an entire block of 40-story New York City buildings? The Hang Son Doong Cave in Vietnam is the largest cave in the world—and its proportions are no joke. Although the cave was technically founded in 1991 by a local man named Ho Khanh, Khanh lost his the cave spans 2.5 miles long, containing passages over 600 feet tall and 300 feet wide.
New Discovery
Hang Son Doong translates from Vietnamese as "cave of the mountain river" or "cave of mountains behind the Doong [village]." If you're interested in exploring its depth, adventure tour company Oxalis operates an expedition to the cave that lasts over the course of five days with a maximum of 10 customers per departure. But beware: the journey is not for the faint of heart.