Introduction to Silver Carp Dun: Silver Carp Dun is a natural island located in the middle of Cihu Lake. It is said that brothers Su Shi and Su Che once took a swim in Cihu Lake and saw the Catfish Dune, which is "a vast expanse of lake with waves and a little bit of mountain". They tied their boats here one after another, chanted, and left behind Su Gong Stone and other relics.