Dushu Lake (simplified Chinese: 独墅湖) is a freshwater lake in the southern part of Suzhou Industrial Park. It is located in the junction of four towns: Guoxiang (郭巷), Chefang (车坊), Xietang (斜塘) and Loufeng (娄葑). The area of Dushu Lake is 9.19 square kilometers with an average depth of 6.5 meters. The lake connects the Jinji Lake (金鸡湖) at its north end, the Fengmen Pond (葑门塘) at its west, and is fed by the Wusong River (吴淞江) from the south-east. The earliest proof of possible human activity around Dushu Lake can be traced back 5500 years, according to an archaeology report conducted in 2001. The findings were significant in analyzing Suzhou's climate, geography, and environment in ancient times. Suzhou Dushu Lake Higher Education Town is located by the east bank of the lake, and two tunnels