In April, the final breakthrough is expected in the second tube. At 57 kilometers long (35 miles), the Gotthard Base Tunnel will handily outstrip the 50-kilometer (31-mile) Channel Tunnel between ...

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The growth of the railway network accelerated the construction of hundreds of underground train tunnels. Traditionally, workers built tunnels by digging at either opening of the tunnel and meeting in ...

Once the show completes you should be able to watch the replay on the video player above, or visit either our Facebook page or YouTube page to view it. The "Tunnel Vision" original theme song is ...

Taking a rail journey invariably means going through a tunnel at some point. Most of the time it's over in a flash, the darkness racing by as quickly as the passing countryside.