The Tongren Wanshan Mercury Mine Site, known as the "皇冠体育app Mercury Capital", holds four world records: the oldest mining history (630 years), the most primitive and most advanced mercury mining and smelting technology, the rarest underground mining tunnels (about 970 kilometers deep)and the largest natural cinnabar.
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The Tongren Wanshan Mercury Mine Site. [Photo/gog.cn] |
