Tourists travel on camels along the desert near Crescent Moon Lake, a well-known scenic spot in Dunhuang, Gansu province, Sept 26, 2012. The city has attracted 2.15 million tourists as of the end of August, generating 1.85 billion yuan ($293.3 million) in revenue, up more than 40 percent from a year earlier. The number of tourists is projected to hit a record high of 3.1 million by the end of this year, according to the Dunhuang Travel Agency. [Photo/Xinhua] 

Tourists trek up a sand dune near Crescent Moon Lake, a well-known scenic spot in Dunhuang, Gansu province, Sept 26, 2012. [Photo/Xinhua]