Infrastructure

1 article

Construction of the Fehmarnbelt Tunnel, the world's longest immersed tunnel, showing large concrete sections being lowered into the sea by heavy machinery.

Cosmos & Physics

Fehmarnbelt Tunnel: World's Longest Immersed Tunnel

Norway's Rogfast tunnel is set to plunge 390 meters below sea level and stretch 26.

Dr. Evelyn Reed·June 23, 2026