Hang Son Doong in Vietnam is the world’s largest cave — one chamber is more than 3 miles long, 660 feet high and 490 feet wide. But just calling Hang Son Doong a cave almost does it a disservice. With its own river, microclimate and jungle, Hang Son Doong is more than a cave; it’s a world unto itself.
Comprehending the massiveness of Hang Son Doong is incredibly difficult, but this footage of the cave, taken, in part, with a DJI Phantom 2, is a good place to start. Photographer Ryan Deboo