A tourist poses for a photo in the Mingsha Mountain (Echoing Sand Mountain)-Crescent Spring Lake Scenic Zone in Dunhuang, Gansu Province April 12, 2008. A small lake, about 400 square meters, has appeared adjacent to the Crescent Spring Lake. In recent years, the city took various measures to protect the lake and temple in the desert by prohibiting drilling new wells and developing water-effective agriculture. [Xinhua]