Mysteria
pound lock · Verified25.5960° N · 110.4890° E

North Section — Pound Lock (陡门) 36 chambers

A structure at Lingqu Canal North Section — Xing'an Qincheng Cut and Pound Lock · 🇨🇳 China

The structure

About North Section — Pound Lock (陡门) 36 chambers

36 stepped pound locks (steep gates doublemen) earliest in world 219 BCE, stone chambers

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