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Stretching nearly three kilometers across West Lake in Hangzhou, China, the Su Causeway is one of the lake’s most iconic features. But it began as a massive engineering project. During the Northern Song Dynasty nearly 1,000 years ago, the poet-official Su Shi (1037–1101) oversaw the dredging of the lake, using the excavated mud to build the causeway. More than just a pathway, this project reshaped the lake itself. Today, the causeway—built from mud—still carries everyday life across the water.
Stretching nearly three kilometers across West Lake in Hangzhou, China, the Su Causeway is one of the lake’s most iconic features. But it began as a massive engineering project. During the Northern Song Dynasty nearly 1,000 years ago, the poet-official Su Shi (1037–1101) oversaw the dredging of the lake, using the excavated mud to build the causeway. More than just a pathway, this project reshaped the lake itself. Today, the causeway—built from mud—still carries everyday life across the water.