The Guoliang Tunnel is located in the Taihang Mountains in China's Henan Province, and was built to connect the isolated village of Guoliang to the rest of the world. Construction began in 1972 ...
Yet there is one tunnel in China that is no less remarkable than many of its modern equivalents. The Guoliang Tunnel was built in the 1970s by local villagers determined to improve accessibility ...
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