Take a tour inside an HS2 Tunnel Boring Machine
7:54
Austria is Digging a Tunnel Like No Other
11:58
Belchentunnel (Switzerland) – Project Film
15:19
Durchschlag am Kaiser-Wilhelm-Tunnel in Cochem auf nkwt.de
20:12
How The Channel Tunnel Works
4:28
Inside HS2's longest tunnel
12:02
3D animation TBM S574 "Martina" (eng)
20:02
Eppenberg SBB Railway Tunnel - From installation to the breakthrough
9:31