Over 30 "quake lakes" formed after falling debris dammed rivers following last month's earthquake in China, draining downstream areas and creating flood dangers should the unstable dams burst. Fighting to open drainage channels in the largest of the lakes, an engineering soldier prepares to fire a missile to blast boulders in a sluice channel in Tangjiashan in southwest China's Sichuan Province on Sunday, June 8, 2008. A total of 4 missiles were fired on Sunday to clear boulders in the sluice channel.