Image|Link
Introduction:
Son Dong Cave was found by a local man named Hồ-Khanh in 1991. The whistling sound of wind and roar of fiery stream in the cave heard through the entrance as well as the steep descent prevented the local people to enter the cave. Only in 2009 did the cave become internationally known after a group of scientists from the British Cave Research Association, led by Howard and Deb Limbert, conducted a survey in Phong Nha-Kẻ Bàng from 10 to 14 April, 2009
Image|Link
Facts:
The Son Dong is situated below another cave in Phong Nha-Ke Bang, though its entry passage is very difficult to traverse. The exploration team said they had set foot on just 6.5 kilometers along the cave, as there is a large amount of fast flowing water inside Son Dong. It takes explorers six hours of walking through a 10 kilometer long forest path from Truong Son Highway to reach the mouth of Son Dong cave. The explorer added that the Quang Binh cave has beautiful stalactites and stalagmites that are not seen anywhere else.
Image|Link
The entrance to the cave was originally found by a local jungle man, Mr. Ho Khanh, in 1990, and then Howard and Deb Limbert of the BCRA led the first discovery expedition into the cave in 2009. Son Doong Cave is now distinguished as the largest cave in the world and has understandably been the attention of many film companies such as the BBC, National Geographic, and many more. It was also prominently featured in National Geographic Magazine in 2011.