葛州坝通航 Gezhouba tonghang Designer Zhang Mingsheng (张明生) Date 1983, March Publisher Sichuan renmin chubanshe (四川人民出版社) Size 77.5x53.5 cm. Call nr. PC-1983-009 Collection Private collection Notes The Gezhouba Dam in the Yangzi is over 2 km. wide. It is used for flood control and to generate electricity. Pictured here is the huge lock that permits very large ships to cross.This is a print from the second edition (June 1983). 30.733969, 111.283596