Tag: Quang Binh Province

Son Dong, the world’s largest cave

small_24125

Son Dong, a cave belongs to the Phong Nha-Ke Bang grotto system in central Quang Binh Province, has been discovered to be the biggest in the world. Son Doong cave, discovered by a local 18 years ago, is more than 200 meters wide, 150 meters high, and at least 6.5 kilometers long, though the explorers