dexter SENIOR MEMBER Joined Apr 17, 2009 Messages 6,111 Reaction score 25 Country Location Oct 25, 2022 #1 The Gotthard Base Tunnel in Switzerland is 57km long: and I think its greatest piece of safety equipment is nowhere near the tunnel itself.
The Gotthard Base Tunnel in Switzerland is 57km long: and I think its greatest piece of safety equipment is nowhere near the tunnel itself.
