First Yangtze River Tunnel completed recent year build in 5 year, Documentary
https://www.youtube.com/watch?v=syEbGfQ2Zv4
#China #Tunnel #Technology
The Yangtze River Tunnel connecting downtown Shanghai to Chongming Island may not seem like an engineering marvel like the metro on the face of it, but when ...
cover tunnel photo by: Matt Brown from London, England / CC BY
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