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Switzerland - Workers break through last bit of rock in world's longest tunnel
Joyous Swiss Hail Longest Tunnel Breakthrough
Excitement on day tunnel will break through
World's longest tunnel opens deep beneath Swiss Alps
Keeping the world's longest railroad tunnel safe
Belchentunnel (Switzerland) – Project Film
World's Longest Tunnel - How It Was Built - Full Documentary
Gotthard tunnel: World's longest and deepest rail tunnel opens in Switzerland
World's longest rail tunnel about to open
How Switzerland Built the Longest Railway Tunnel
Attempting the world's scariest glass slide!
China Leaves American President Shocked, Builds The Longest Undersea Tunnel In The World
