Su Causeway, October 2017. This 2.6 km walkway through West Lake was constructed in 1086 by the famous poet and Hangzhou governor Su Shi. It was a time of great poverty and drought, so Su ordered the dredging of the lake and used the resulting mud to build a new causeway. Later on six bridges were added and willow trees planted on each side. This photo is an aerial view of the causeway taken from the top floor of Leifeng Pagoda.