Wushaoling railway tunnel is the longest single-track railway tunnel in China and is the key project of Lanxin railway line.
乌鞘岭隧道是兰新线重点控制工程，是国内最长的单线铁路隧道。
Wushaoling railway tunnel is the longest single-track railway tunnel in China and is the key project of Lanxin railway line.
乌鞘岭隧道是兰新线重点控制工程，是国内最长的单线铁路隧道。
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