Shuanghedong

Shuanghedong (双河洞)
Location:	Suiyang , Guizhou , China
Geographic ; location:	28 ° 14 '32.5 " N , 107 ° 16' 34.2" E Coordinates: 28 ° 14 '32.5 " N , 107 ° 16' 34.2" E
Geology:	Gypsum and dolomite
Discovery:	1987
Overall length:	257,366 m
Level difference:	655 m

With a length of over 257 km, Shuanghedong (双河洞) is the longest cave system in China and the fifth longest cave in the world.

It is located near Wenquan City, Suiyang County, Guizhou Province .

Since the discovery of the gypsum and dolomite cave in 1987, it has been explored by international research teams. In addition to numerous fossils, cave animals such as troglobionte insects, fish and salamanders were discovered.

So far 203 entrances are known for this cave system.

Individual evidence

↑ Worlds Longest Caves. NSS Geo2, Bob Gulden, April 7, 2019, accessed July 1, 2019 .
↑ 双河洞景区风光. September 7, 2010, accessed July 1, 2019 (Chinese).
↑ Asia's longest cave has many wonders. The Jakarta Post , March 29, 2018, accessed July 1, 2019 .
↑ Guizhou's Shuanghe Cave named longest cave in Asia. China Daily , March 25, 2018, accessed July 1, 2019 .

[1] Worlds Longest Caves. NSS Geo2, Bob Gulden, April 7, 2019, accessed July 1, 2019 .

[2] 双河洞景区风光. September 7, 2010, accessed July 1, 2019 (Chinese).

[3] Asia's longest cave has many wonders. The Jakarta Post , March 29, 2018, accessed July 1, 2019 .

[4] Guizhou's Shuanghe Cave named longest cave in Asia. China Daily , March 25, 2018, accessed July 1, 2019 .