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For decades, some geologists know that Vietnam is one of the houses of the caves are spectacular, and most of them not yet explored. A researcher discovered a cave that is claimed to be the largest cave in the world, in Vietnam the center, near the border with Laos.

The cave was found by a local man named Hồ-Khanh in 1991. The local jungle men were afraid of the cave for the whistling sound it makes from the underground river. However, not until 2009 was it made known to the public when a group of British scientists from the British Cave Research Association, led by Howard and Deb Limbert, conducted a survey in Phong Nha-Ke Bang from April 10-14, 2009.
Son Doong Caves means: mountain river located cave in Phong Nha National Park-Ke Bang is a 3.8 km-long cave, with a width of 90 m, and in some parts, has a height up to 180 meters.

Excerpted from the January 2011 edition of National Geographic, is actually a cave that was known long ago by residents of Vietnam. However, this cave has never been seriously explored. Well, last spring a group of professional cave crawler from the UK managed to "dissect" the cave to its conclusion.

Apparently the cave was able to defeat the cave which is considered the largest in the world, the "Deer Cave", Gunung Mulu National Park, Borneo, Indonesia which has a length of about 2 km, width 150 m, and height about 120 meters.

The cave itself is hidden in the jungle was so thick that very hard to find. "It took three expeditions to find the cave Hang Son Doong," said Howard Limbert, the leader of the expedition to the world's largest cave.

To find it, Limbert should be assisted by a local resident named Ho Khanh, who discovered the cave when he was young because of being chased by enemy troops during the Vietnam War.

Inside the cave Son Doong, it turns out there are so many wonderful things. In one section of the cave has a very large room, so it can load the Superdome football stadium in New Orleans, Louisiana USA.


Annamite Mountains Caves located well within it rivers and forests even thin clouds and so far not been explored. This is part of a network that connects the 150 caves in Vietnam, which borders Laos, even if there is a stretch of jungle-covered various trees as high as about 30 m. In another section, the cave was even able to load the high rise building 40 stories, because it has more than 240 meters high

Meanwhile, from the bottom there are calcite rocks that rise to the top to about 60 m. He also has passageways at certain times submerged by water, so the only passable in the summer.

Sources : http://en.wikipedia.org/   
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