The Son Doong cave, Vietnam
The Son Doong cave is world’s biggest cave, situated in Son Trach, Bo Trach District, Quang Binh region, Vietnam. It is discovered by a local man named Ho Khanh in 1991 and was freshly exposed in 2009 by British cavers, led by Howard Limbert. The title “Son Doong” caves denotes “mountain river cave”, it was produced 2-5 million years before by river water eroding away the limestone beneath the mountain where the limestone was weak, the upper limit crumpled creating vast skylights. Son Doong cave is extra than 200 meters broad, 150 meters high, and approx 9 kilometers long, with caverns large enough to fit an whole city road inside them, twice as large as Deer Cave in Malaysia which is currently believed the world’s major with 90 meters wide, 100 meters high and 2 kilometres long. Son Doong cave was classified as the biggest cave in the world by BCRA and picked as one of the most striking in the globe by the BBC news.
Son Doong cave is unseen in rugged Phong Nha-Ke Bang National Park in Quang Binh region close to the border with Laos, the cave is division of a network of 150 or so caves, several still not surveyed, in the Annamite Mountains. It is very hard to traverse. During the first journey, the team discovered two and a half miles of Son Doong cave previous to a 200-foot wall of muddy calcite blocked them. They named it the Great Wall of Vietnam.