Vereina Tunnel
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The Vereina Tunnel is situated in eastern Switzerland, and with its 19,058 km is the longest tunnel on the Swiss RhB/MGB railway network. In length, it is followed by the Furka Tunnel (15,442 km) and the Albula Tunnel (5,8 km).
Service is based on hourly regional trains between Scuol-Tarasp and Chur, completed every 30 minutes by shuttle trains transporting road vehicles between the two valleys linked via the tunnel and by freight trains.
The tunnel is single track, with passing loops (each 2 km long) in the middle and near the two portals.