ifspot.blogg.se - Son doong forest

#Son doong forest full#

^ Letter 1213/UBND-VX,, Government of Quang Binh Province.^ "First foreign tourist group explores Son Doong Cave".^ "Son Doong voted among world's seven wonders for 2020"."World's biggest cave is even bigger than we thought". ^ "Britons claim to find world's largest cave".Archived from the original on April 27, 2009. ^ "World's largest grotto unveiled in Vietnam".^ a b c "Son Doong Cave exploration story | The largest cave in the world".^ Ho Khanh, a local farmer and biggest cave in the world at, accessed June 23, 2020."Fly Through A Colossal Cave: Son Doong in 360°". ^ "Gerological Map of Vietnam, Kampuchea, and Laos".Archived from the original on January 6, 2011.

"Explorers discover spectacular caves in Vietnam".

^ a b c Dykes, Brett Michael (January 3, 2011).

^ "World's Biggest Cave Found in Vietnam".

^ "From the Biggest to the Longest, Five Amazing Caves to Visit".

The cave's interior is so large that it could fit an entire New York block inside, including skyscrapers, or could have a Boeing 747 fly through it without its wings touching either side. Behind the Great Wall of Vietnam were found cave pearls the size of baseballs, an abnormally large size. The cave contains some of the tallest known stalagmites in the world, which are up to 70 m (230 ft) tall. This increases the potential volume of the cave by more than 1,600,000 m 3 (57,000,000 cu ft). īy mid-2019, the cave was found to be connected by its underground river with a nearby cave called Hang Thung. The dolines allow sunlight to enter sections of the cave, resulting in the growth of trees and other vegetation. The cave runs for about 9 km (5.6 mi) and is punctuated by two large dolines, areas where the ceiling of the cave has collapsed. Its cross-section is believed to be twice that of the next largest passage, in Deer Cave, Malaysia. It is more than 5 kilometres (3.1 mi) long, 200 metres (660 ft) high and 150 metres (490 ft) wide. Description įormed in Carboniferous/ Permian limestone, the main Sơn Đoòng cave passage is the largest known cave passage in the world by volume – 3.84 ×10 7 m 3 (1.36 ×10 9 cu ft), according to BRCA expedition leader Howard Limbert. They estimated that the overall length of the cave system exceeded 9 km (5.6 mi). The expedition returned in March 2010 and successfully traversed the wall, which allowed the explorers to reach the end of the cave passage.

#Son doong forest full#

Their progress in exploring the cave's full length was stopped by a large, 60-metre (200 ft) high flowstone-coated wall, which the expedition named the Great Wall of Vietnam. This expedition, conducted between 10 and 14 April 2009, performed a survey of the cave and gave its volume as 38,500,000 m 3 (1.36 ×10 9 cu ft). They asked him to attempt to rediscover the entrance, which he eventually managed to do in 2008, and in 2009, he led an expedition from the BCRA to the entrance. Later, he mentioned his discovery in passing to two members of the British Cave Research Association (BCRA), who were exploring in the local area. Not thinking it to be of any great importance, by the time he returned to his home, he had forgotten the exact location of the entrance. Although he initially went to investigate further, he was discouraged upon approach by the sound of rushing water and the strong wind issuing from the entrance. The entrance to Hang Sơn Đoòng was found in 1991 by a local man named Hồ Khanh, while searching for agarwood, a valuable timber. Īs a solutional cave, it was formed in soluble limestone and is believed to be between 2 and 5 million years old. Its name, Hang Sơn Đoòng, is variously translated from Vietnamese as "cave of the mountain river" or "cave of mountains behind Đoòng ". It is the largest known cave passage in the world by volume. Located near the Laos–Vietnam border, Hang Sơn Đoòng has an internal, fast-flowing subterranean river and the largest cross-section of any cave, worldwide, as of 2009, believed to be twice that of the next-largest passage. Sơn Đoòng cave ( Vietnamese: hang Sơn Đoòng, IPA: ), in Phong Nha-Kẻ Bàng National Park, Bố Trạch District, Quảng Bình Province, Vietnam, is one of the world's largest natural caves.