Huanglong Pass, Sichuan.

http://farm8.staticflickr.com/7521/15504606074_5241c89243_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/15504606074/in/pool-844972@N25