Notes on the Geography of China: Turfan : Photo 14
A bit of tunneling. This is the Yengi Karez, reportedly dug in 1300 and recently producing 48 liters per second. It's a shorty: three kilometers long, with 110 access wells. Its deepest well, naturally at the head of the tunnel, is 63 meters deep.
Back to China: Turfan chapter
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