Hidden beneath Norway's rugged mountains lies a marvel of modern engineering: the Lærdal Tunnel, the longest road tunnel in the world that takes 20 minutes to drive through. This astonishing 24.5 ...

Deep beneath Norway’s rugged mountains lies a feat of modern engineering: the Lærdal Tunnel, the longest road tunnel in the world. Stretching an astonishing 24.5 kilometres (15.2 miles ...