Schweizer Mega-Projekt - Ein 450 Kilometer langer Tunnel

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Schweiz beschließt Mega-Projekt: Gotthard-Tunnel wird verdoppelt

World's Longest Tunnel Completed

World's longest tunnel created in Switzerland

World's longest tunnel created in Switzerland

World's Longest Tunnel Completed

Why This New Mega-Tunnel Will Transform European Travel Forever

Fehmarnbelt Tunnel: The Megaproject That Will Transform European Travel

Schweizer Mega-Projekt - Ein 450 Kilometer langer Tunnel

World's longest tunnel created in Switzerland

The $11B Tunnel That Could Save One of Europe's Busiest Mountain Corridors