The train leaves the Swiss Alps' station and soon enters total darkness. It picks up speed, reaching 125 miles an hour as it hurtles through the mountain at depths of up to 7,500 feet.

But, finally, the world's longest and deepest rail tunnel, running under the Swiss Alps, was unveiled today. ... Trump says US strikes hit Iran 'far below ground level' Jun 23, 2:06 AM.

Did you know that the Gotthard Base Tunnel in Switzerland, the longest rail tunnel in the world, runs deeper than any other tunnel, reaching up to 2.3 kilometres (1.4 miles) below the surface?

Coming in at 35.5 miles long, the Gotthard Base Tunnel beats out the previous record-holders for longest underground train tunnel by a hair: the now-second-longest tunnel, Japan’s Seikan Tunnel ...

The tunnel, the world’s longest and deepest, serves as a vital rail link between Northern and Southern Europe. Now, the Gotthard Base Tunnel will be closed to passenger traffic until 2024 due to ...

The record-breaking 35-mile Gotthard Base Tunnel beneath the Swiss Alps is to remain closed to train passenger traffic for several months after a major derailment ripped up the track.

Switzerland’s national rail operator said Thursday the world’s longest rail tunnel won't be fully reopened to train traffic until next September, again pushing back the target date for repairs ...

GENEVA — Switzerland will celebrate an engineering marvel 20 years in the works on Wednesday: the debut of the world's longest and deepest railroad tunnel. The new tunnel through the Alps is 35. ...