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China: Underground water-transfer tunnel under construction in Central China's Hubei
Good photographs and informations.
https://english.www.gov.cn/news/photos/202302/19/content_WS63f18998c6d0a757729e6ed8.html
Underground water-transfer tunnel under construction in central China
https://english.news.cn/20230219/b1386837c158496ebba311d1f629ba61/c.html
cover tunnel photo by: Matt Brown from London, England / CC BY
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https://english.www.gov.cn/news/photos/202302/19/content_WS63f18998c6d0a757729e6ed8.html
Underground water-transfer tunnel under construction in C China's Hubei
english.www.gov.cn