Take an otherworldly journey through Hang Son Doong, the world’s largest cave, by both ground and air.
photo credit: bbc.com
Filmed near the entrance and the first and second dolines (skylights) which are 2.5 and 3.5 km inside the cave respectively.
photo credit: Traveller.com.au
Hang Son Doong in Vietnam is the largest cave in the world. It’s more than 5.5 miles long, comes complete with its own jungle and river.
And is so gargantuan that it could apparently hold an entire block of 40-story skyscrapers within its walls.
The cave was found by a local man named Ho Khanh in 1991 and was recently discovered in 2009 by British cavers, led by Howard Limbert.