Construction has finished on HS2's longest tunnel, which includes extensions with ventilation holes carved out to prevent ...

One of the 20th century's most remarkable underground tunnels was engineered to endure powerful earthquakes while linking two ...

The tunnel connects two beautiful islands and is even longer than the Channel Tunnel.

The Ryfylke Tunnel is the longest undersea road tunnel in the world at present and stretches some 8.98 miles between ...

A five-year construction project on the Chiltern tunnel, the longest tunnel on HS2, has been completed with the close of work ...

Work is well underway on the project, which was originally estimated to cost £1.1billion. However, estimates have now ...

The Northern Line currently holds the record at 17 miles, having opened back in 1937. But the Woodsmith Mine Tunnel is on ...

Stretching 18 km between Denmark and Germany, this €7bn immersed tunnel is the world’s longest road and rail link. By 2029, ...

Fehmarnbelt Fixed Link, the longest undersea tunnel between two countries reaffirmed by both German and Danish governments, ...

One tunnel holds the record as the UK's longest at 17 miles, carrying approximately 900,000 people daily - but another will ...

Across the world, road tunnels have quietly stretched longer, dived deeper, and grown more ambitious, reshaping how people ...