Inside the world's deepest tunnel that's 35 miles long and cost a staggering £9.6bn to build
The Mirror - World News·2024-05-04 01:01
The Gotthard Base Tunnel in Switzerland is 2,300 metres deep, 57 kilometres long and cost a staggering £9.6bn to build - but it was closed after disaster struck in 2023 when a train derailed inside
The world's deepest and longest tunnel, which stretches a remarkable 35-miles and cost a whopping £9.6bn, made headlines when it opened in 2016.
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