Discovery Channel - Megabuilders - Moving Mountains

Seizoen: 2 - Aflevering: 1 / 7 - Eerst uitgezonden: 30 oktober 2006 - Episode ID: 440305

With a price tag of 6 Billion American Dollars, The Gotthard Base Tunnel, between Lucerne and Milan, is a mega project by any standard. With 3,000 meter-high mountains in their path, the geology under the Alps remains unknown, no matter how much exploration is done it can present surprises right up to the last minute.