Huanglong, Sichuan.

http://farm8.staticflickr.com/7464/15941184927_e3e674e710_m.jpg

Walkabout Kid has added a photo to the pool:

via Destinations around the world - The travel group Pool http://www.flickr.com/photos/calemcmillen/15941184927/in/pool-844972@N25