The tunnel is 1.3 km long, 5 m tall and 4 m wide located in Henan province of China. The tunnel opened on 1 May 1977 after a construction period of 6 years.
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Guoliang Tunnel Road, China
The tunnel is 1.3 km long, 5 m tall and 4 m wide located in Henan province of China. The tunnel opened on 1 May 1977 after a construction period of 6 years.
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