The cost of the notorious HS2 “bat tunnel” has soared to £125m, The i Paper can reveal. Official estimates, obtained under a ...

Built in 1907, the train tunnel through the Santa Susana Pass has no ventilation, lighting or drainage. Its tracks rattle and shake, and Metrolink trains that normally run at 50 mph must slow to ...

Tunnel boring machines have been in operation for over 200 years and they operate on the same basic principles today as they did back then.

At 30m (98ft) below ground level, the tunnel allows the train line to avoid Long Itchington wood HS2's first deep tunnel, which took 15 months to dig and is under ancient Warwickshire woodland ...

Ninety feet below the East River, Amtrak’s 110 year-old train tunnels are slowly filling with salty water dripping on high-voltage cables as steel is nearly corroded to dust.

The Neidpath train tunnel, located just south of Edinburgh in the Scottish Borders, was built in the 19th century and will plunge you into complete darkness - if you dare to enter.

The brick-lined tunnel was constructed by contractor William Scott, as part of the Peebles-Symington 'extension line'. Over 600 yards in length, it was built beneath the South Park Wood to emerge ...