In this photo released by China's Xinhua News Agency, villagers walk past a sinkhole in Tanluo Village of Nanning City, south China's Guangxi Zhuang Autonomous Region, Saturday, June 2, 2012. More than 800 villagers have been evacuated after land sank in the province Friday, which is known for its karst topography. (AP Photo/Xinhua, Zhou Hua)
In this photo released by China's Xinhua News Agency, villagers walk past a sinkhole in Tanluo Village of Nanning City, south China's Guangxi Zhuang Autonomous Region, Saturday, June 2, 2012. More than 800 villagers have been evacuated after land sank in the province Friday, which is known for its karst topography. (AP Photo/Xinhua, Zhou Hua)