Son Doong cave - Phong Nha Ke Bang national park

There are forests in the cave, large enough to accommodate a skyscraper in New York, and the end point of the cave is endless - That is an assessment of Son Doong cave, the largest natural cave in the world on the famous magazine National Geographic.

Son Doong cave is located in Phong Nha Ke Bang national park, and is part of the underground system connecting more than 150 different caves in Vietnam. Son Doong cave is discovered by a local people Ho Khanh, and he has guided the expedition British Caving Association seek to here, and he also named for the cave.

In the 2009 publication of Son Doong cave, British Caving Association wrote: the cave has a width of 200m, over 150m high, reaching at least 6.5 km length. And maybe the cave longer than that, but due to technical conditions, the explorers were not able to explore the entire length of the cave to conclude how long cave. With this size, Son Doong cave has surpassed Deer cave in Gunung Mulu national park of Malaysia (with 100m high, 90m wide, 2 km length) to occupy the position of the largest natural cave in the world.

In the most recently time to rediscover the cave, scientists confirmed: Son Doong cave at least 8.5km long, 200m high and in some areas up to 250m. In the cave arch, the view is extremely magnificent, with images of the Garden of Eden in the cave, stalactites giant walls, or the pearl collection with tens of thousands years... Viewers have surprised by the incredibly enchanting of Son Doong cave.

- Since August 2013, Son Doong cave was officially open to visitors, but only in limited numbers, because this is a risky journey and need a lot of equipment, as well as thorough preparation.

- Son Doong cave tour cost is also relatively high, about $ 3,000 for 7 day 6 night itinerary and must booking before, because lots of tourists around the world eager to discover Son Doong cave.