Tunnels are used to carry traffic through some of the most extreme terrain on the planet and they help ease journeys with reduced travel time. While most tunnels offer a short underground burst of ...
Regular rail service began in December 2016 through Switzerland's Gotthard Base Tunnel, the world's longest and deepest tunnel. It runs beneath the Swiss Alps. Pictured: An Italian train at the tunnel ...
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The longest road tunnels in the world
Tunnels are used to carry traffic through some of the most extreme terrain on the planet and they help ease journeys with reduced travel time. While most tunnels offer a short underground burst of ...
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