The January issue of National Geographic features the Hang Son Doong, or “mountain river cave in Vietnam, the largest cave in the world.
In April 2009, husband and wife Howard and Deb Limbert led a team of of British cave explorers of British Caving Association to take an in depth look inside Vietnam’s mammoth cavern that they described as a cave that could fit an entire New York City block of 40-story buildings with it’s end out of sight.
The cave was first found by a local man named Hồ-Khanh in 1991. He took the team to the unexplored cave in 2009. Local jungle men were afraid to enter the cave because of the frightful sound it makes due to a large underground river. Hang Son Doong contains river, jungle and have its own thin clouds.
Hang Son Doong is located at Phong Nha-Ke Bang National Park near the border with Laos and is part of a network of 150 in the Annamite Mountains.