Sơn Đoòng Cave is located in  Vietnam

According to the Limberts, the cave is five times larger than nearby caves like Phong Nha Cave and Hang En, the third largest cave in the world previously considered the biggest cave in Vietnam. The main passage in Sơn Đoòng is more than 5 kilometres (3.1 mi) long, 200 metres (660 ft) high and 150 metres (490 ft) wide.

Submitted by Petro Podrezo. More information about this location can be found here.

Coordinates at 17.449860005592164,106.29034801534017