Last and the longest of the 50 tunnels on an intra-provincial railway, was drilled through and completed in south China's Guangdong Province on May 30 after more than 35 months of work.
cover tunnel photo by: Matt Brown from London, England / CC BY
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https://news.cgtn.com/news/2022-05-31/Tunnel-construction-completed-on-Guangzhou-Shantou-high-speed-rail-1autX3wt248/index.html
Tunnel construction completed on Guangzhou-Shantou high-speed rail
news.cgtn.com