Girsberg Tunnel
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The Girsberg Tunnel is a motorway tunnel in Switzerland, and forms part of the A7 motorway from Winterthur to Kreuzlingen and the border to Germany.
The tunnel is around 1.8 km long.
It lies in the northeastern part of the canton of Thurgau.
The tunnel essentially winds its way down a hill in a clockwise direction (heading into Kreuzlingen). Despite all this winding, there is no actual difficulty in driving through the tunnel.
The eastern end of the tunnel is less than half a kilometre away from the terminus of the toll portion of the A7 motorway, which takes the form of a rarely-seen motorway roundabout.