Great St Bernard Tunnel, road tunnel on the border of Switzerland and Italy
The Great St Bernard Tunnel is an international road passage connecting Switzerland to Italy that runs beneath the mountain pass of the same name. This structure allows year-round crossing of this Alpine route without needing to travel over the exposed ridgeline above.
The tunnel was built and opened in the 1960s to create a dependable transport link across the Alps. It replaced reliance on the seasonal mountain pass above, which was often impassable during winter months.
The route is passable year-round and offers a safe crossing even during harsh weather conditions at high altitude. Drivers should be aware that the passage runs underground with full safety systems in place for the journey through the mountain.
The tunnel crosses beneath one of the Alps' highest and most challenging mountain passes at around 2500 m elevation. This underground route was a landmark engineering achievement and transformed traffic flow between Northern Europe and the Mediterranean region.
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