Lake of Five Colors.
In China it is located in the most picturesque valley - Jiuzhaigou. The Jiuzhaigou Valley is a natural reserve in the north of Sichuan Province, in the southwestern part of China. The valley is famous for its cascading waterfalls and picturesque lakes. The valley extends to 240 square meters.
A source: https://wikipoints.ru/point/773
Awesome photos...would love to visit there. Well worth an upvote