Impossible Engineering (UK)
Impossible Engineering (UK)
The Gotthard Tunnel (2x1)
Data di messa in onda: Mar 16, 2016
Constructing the Gotthard Base Tunnel in Switzerland, the longest rail tunnel in the world, running for 57 kilometres through the Alps.
- Iniziato: Apr 2015
- Episodi: 52
- Followers: 1
- Terminata
- U&Yesterday
- Mercoledì alle 20