Inside the Construction of the Fehmarnbelt Tunnel

The Fehmarnbelt Tunnel will connect Denmark and Germany, creating the fastest route between Scandinavia and central Europe. Interesting Engineering shared a video from the builders explaining how the nearly 400,000 tons of steel and almost 4 million cubic yards of concrete would be assembled into 89 elements that will be moved into position by tugboats and lowered into the seabed to create the more than 11-mile tunnel.