Zimmerberg
This Tunnel is a railroad burrow under the Zimmerberg mountains in Switzerland. It is isolated into two segments, of which area I is operational and segment II just proposed. Zimmerberg I is around 10 km long and interfaces Zurich with
This Tunnel is a railroad burrow under the Zimmerberg mountains in Switzerland. It is isolated into two segments, of which area I is operational and segment II just proposed. Zimmerberg I is around 10 km long and interfaces Zurich with