🇨🇳 China · Hydraulic works
Turpan Shengjinkou Karez Gorge Head (Shengjinkou Gorge Karez System)
Han to Qing continuum (200 BCE–1900 CE) karez re-use · Gaochang / Uyghur oasis
Gorge-head karez at Shengjinkou Yardang Gorge mouth northwest Turpan Depression (−45 m, below sea level, unique globally).