Sun Dong cave

         The largest cave in the world in the jungles of Vietnam cave "Dong Son" is located amid the dense trees, discovered by British researcher and his wife during their journey of exploration in 2009 in search of the largest cave in the world.
It estimated the cave B262 square feet equivalent (80 square meters) and since its discovery broke the record for the largest cave in the world hijackers title of the cave "deer" (Deer Cave) in Malaysia.
Although the deer cave area of ​​not less than (91 square meters), but the length does not exceed 1.6 kilometers while the total length of the cave, "Dong Son" 4.5 km ends waterfall believed to be the longest cave area that may extend beyond the waterfall. Researchers journey began in the science of caves Britons Howard Limbert and his wife Deb to explore the largest cave in the world in 2009. In April of the same year, led by a local farmer to "Phuong Naki Bang national" park Phong Nha-Ke Bang National Park to view the cave he found himself before Couple of years.
During the search team discovered inside the cave river passes through the 2.5 kilometer area of ​​the cave stone in addition to the giant boulders of limestone with a length of 70 meters.
Wild Kratts used to measure the length of the cave, "Dong Son" sophisticated laser devices for measuring distances, which allow the measurement of caves accurately, according to the statement by Andy Eavis, president of the International Union for the study of caves in France team to National Geographic. Ives said that "the measure caves area in the past were discretionary and we often exaggerate our estimates today Vtaatih us this new technique calculate distances accurately."
According to the report, "National Geographic," former British exploratory campaigns have failed to discover the cave, "Dong Son" because of the difficulty of the terrain in this region and the Vietnamese because of the dense forest that blocked the cave.
The research team said that local residents were aware of the existence of the cave but they were afraid to enter it because of the proliferation of insects (four-and forty-giant feet) of toxic (poisonous centipedes) as well as the loud sounds and Almrhbh of the waterfall, which can be heard from the entrance of the cave. The team also monitored the presence of monkeys enter the cave through the ceiling of the cave to feed on snails.
Explorer Howard and his wife said that a team of note in the coming quarters will be accompanied by their visit to the cave to study the wildlife of the largest cave in the world.
The "National Geographic" report said that a number of large caves, which have larger than the size of the cave Vietnam lies in the depths of the Amazon rainforest in waiting to be discovered.