Wearing a red hard hat and carrying a backpack with an emergency oxygen tank, I’m sweating as I get a rare look at the newest wonder of the world—the 35.4-mile Gotthard Base Tunnel ...

Switzerland’s Gotthard Base TunnelExternal link is the world’s longest (and deepest) railway tunnel. Opened in 2016 after 17 years of construction, it consists of two 57.1km single-track ...

Switzerland just opened the longest and deepest train tunnel in the world; a $12 billion project that took 17 years to complete. Produced by Lamar Salter Follow BI Video On Twitter More from Tech ...

and a remote sensing survey to map the massif's nooks and crannies to an accuracy of about ten meters. Nothing about the Gotthard project is small. In the course of building the tunnel ...

The Defence Ministry said the explosives, which have been kept at the Gotthard as part of Switzerland’s traditional ... fair distance away from the actual tunnel. He also pointed out that ...