Er Wang Dong Explained

Er Wang Dong
Location:	Houping Township, Wulong County, Chongqing, China
Depth:	441 m
Length:	42,139 m

Er Wang Dong is a large cave in the Wulong Karst region, in Wulong County of Chongqing Municipality of China.^{[1] [2]}

Current known length of its passages is ^{[3] [4]} with a maximum depth of 441m (1,447feet). It is large enough to contain its own weather system. The cave starts in the 195m (640feet) deep Niubizi tiankeng (牛鼻子天坑; "ox nose sinkhole") and also contains the 295m (968feet) deep Qingkou tiankeng.

Er Wang Dong cave has formed in Lower Ordovician limestone and is located close to another very large cave system - San Wang Dong.

Both caves were explored by Hong Meigui Cave Exploration Society. Local people make weather forecasts based on the observations in Niubizi tiankeng - if there is a fog coming from the cave, rain is expected.^[3]

See also

• • • List of caves in China

Notes and References

1. Web site: 地下化石走廊——二王洞 (The Underground Fossil Corridor - Er Wang Dong) . https://web.archive.org/web/20131004220703/http://hpx.cqwl.gov.cn/Html/23/zjhp/hply/2009-11/4211.html . dead . October 4, 2013 . The Official Government Website of Houping Township, Wulong County . November 5, 2009 . October 2, 2013 . zh .
2. News: First-Ever Images of Er Wang Dong Cave, A Cave With Its Own Weather System . Leslie Lapides . 3 Oct 2013 . . dead . https://web.archive.org/web/20131004185555/http://www.weather.com/news/science/environment/china-cave-weather-20131002 . 2013-10-04 .
3. Web site: Er Wang Dong Cave. 11 October 2013 . Wondermondo.
4. Web site: Website of Hong Meigui Cave Exploration Society. 2013-10-03. 2021-02-12. https://web.archive.org/web/20210212065037/http://www.hongmeigui.net/. dead.