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The World Largest Cave


Son Doong Cave is located in the heart of Phong Nha ke Bang National Park in Quang Binh province of central Vietnam. It was recently explored in 2009-2010 by the British Cave Research Association. All research and tourist expeditions have thus far been organized and led by local adventure tour company Oxalis.

In 1990, Ho Khanh a local man always trek and maneuver his way into the park in search of food and timber to earn an income. He stumbled across an opening in a limestone cliff and moved forward to investigate it. He forgot to tell the villagers because he lost the memory about it. In 2009, he led Howard, Deb and a team of professionals back to the cave after rediscovering it in 2008 during one of his gathering trips.

The cave contains the oldest Karst system in Asia, between 400-450 million years old. Hang Son Doong from analysis of sediment dating is about 3 million years.

At over 5km (3.1mi) long with sections reaching up to 200km (660ft) tall and 150(490ft) wide, Hang Son Doong is large enough to house an entire New York block, complete with 40 storey skyscrapers. It has a total measured volume of 38.5million cubic metres, this comfortably surpasses Deer Cave in Malaysia. Stalagmites up to 80M high have also been surveyed, the tallest ever encountered.

The Hang Son Doong cave is so big that it has its own river, jungle and climate. There are plans to build a cable car through the cave. The proposed system would be 10.5km (6.5mi) long and cost between $112 and $211 million. But this plans are opposed by environmentalist.

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