Megastructures
Iceland's Big Dig (2007x3)
Data emisji: Maj 05, 2007
In Iceland, a giant tunnel boring machine called `Jaws' has chewed up nine miles of basalt to aid a hydroelectric project. See the rock cruncher at work as it burrows deep down.
- Premiera: Wrz 2004
- Odcinki: 162
- Obserwujący: 11
- Trwający
- National Geographic
- Wtorek w 20