President Zardari visited the Three Gorges Dam in China and was shaken out of his stupor. He is reported to have said, "We must build dams like this". The nearest thing we have to the Two Gorges Dam is the Kalabagh dam, which will have two gorges, one on the Indus and another on the Sohan River. -KHURSHID ANWER, Lahore, via e-mail, February 23.