Son Doong is located in Vietnam, I was part of a National Geographic tour which did an interactive 360 reportage of the caverns.
Please check our work out and tell me what you think!
More info: nationalgeographic.com
Lighting this place up was a nightmare, but damn it turned out good!
Yep, its pretty big...
Yeah, people were pretty critical in showing the shear size of the place...
Happy and exhausted!