Lake Tai impact crater

Lake Tai is located in China

Lake Tai or Lake Taihu (Chinese: 太湖, p Tài Hú, Wu: Ta Wu, lit. "Great Lake") is a large freshwater lake in the Yangtze Delta plain near Shanghai, China. The lake belongs to Jiangsu province and the southern shore forms its border with Zhejiang. With an area of 2,250 square kilometers (869 sq mi) and an average depth of 2 meters (6.6 ft), it is the third-largest freshwater lake in China, after Poyang and Dongting. The lake houses about 90 islands, ranging in size from a few square meters to several square kilometers.

• http://en.wikipedia.org/wiki/Lake Tai