Sơn Đoòng – the world largest cave

Son Doong Cave is based in Quang Binh, in the North Central part of Vietnam, midway between Danang and Hanoi. At the moment, the cave is only available to visit between February and August and closed from September to January due to flood. Discovered in 2009, Son Doong Cave in Quang Binh, Vietnam, is currently …