Black Valley: from the coal country to the karst
Wansheng supplied up to half of Chongqing's coal; the valley that replaced the pitheads is part of the limestone belt behind it.
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Wansheng supplied up to half of Chongqing's coal; the valley that replaced the pitheads is part of the limestone belt behind it.
Dongxi was a county seat from 619 to 644 and a market town ever since; its palaces, salt road and post office record the traffic that kept it alive.
Southern Qijiang is limestone, dolomite and coal; the gorge is the district's geology seen from inside.