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Dark Horse News on Twitter: "Bizarre Opening Ceremony For Gotthard Base Tunnel In Switzerland PART 2 https://t.co/DTaN7OjxbX https://t.co/YQORxfFFnx" / Twitter
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Gotthard Base Tunnel, World's Longest, Deepest Tunnel, Is Officially Open In Switzerland : The Two-Way : NPR
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Switzerland's St. Gotthard Base Tunnel Will Be the World's Longest Ever Rail Tunnel When it Opens June 1st - Bloomberg
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