水火同源 shared by @afar says: ""Stop By A Pool of Burning Water The flames on top of this pool of water are said to have been burning for more than 300 years, and were started by and earthquake that opened a fissure in the earth releasing natural gas into the bottom of the pool. The phenomenon is definitely worth stopping by, especially if you are interested in visiting the nearby Guanziling Hot Springs -- another of the area's natural wonders."" on Postcard