How Europe Is Building the World's Longest Underwater Tunnel

🚇 How Europe Is Building the World's Longest Underwater Tunnel Europe is building one of the most ambitious transportation megaprojects ever attempted — the Fehmarnbelt Tunnel, a massive underwater link between Denmark and Germany designed to become the world’s longest immersed road-and-rail tunnel. In this documentary, we explore how Europe is building the world’s longest underwater tunnel, how enormous concrete tunnel sections are constructed on land, floated into position, and carefully lowered onto the seabed beneath the Baltic Sea. Discover the engineering behind this incredible project, including underwater excavation, tunnel segment construction, waterproofing, ventilation, safety systems, and the challenges of building a permanent transport route beneath the sea. Once completed, the Fehmarnbelt Tunnel is expected to dramatically reduce travel times between Scandinavia and mainland Europe while carrying both cars and trains through an 18-kilometer underwater connection. From massive construction basins and precision seabed work to giant prefabricated tunnel elements, this is the story of how Europe is creating one of the most extraordinary infrastructure projects on Earth. #FehmarnbeltTunnel #UnderwaterTunnel #Europe #Denmark #Germany #MegaProject #Engineering #TunnelEngineering #Infrastructure #MegaEngineering #Construction #Documentary #Rethink