In Vietnam’s Phong Nha-Kẻ Bàng National Park, lies Sơn Đoòng, a mind-bogglingly huge cave, more than 3 miles long. It’s so big, a 747 could fly comfortably through the heart of the cave, and it could swallow entire city blocks, skyscrapers and all. This short film takes you on a journey of one of the world’s true natural stunners.


Pin It on Pinterest