World's Most Extreme

World's Most Extreme

Tunnels (1x4)

Seizoensfinale

Uitzenddatum: Dec 16, 2014

From the Swiss Alps to a Japanese metropolis, tunnels are often wonders of modern construction, but can also be scenes of disaster. These are the 10 most extreme tunnels on Earth.

  • in première gegaan: Sep 2014
  • Afleveringen: 12
  • Volgers: 0
  • Afgelopen
  • Travel Channel
  • Woensdag op 9