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Pyhrn Autobahn

Motorway in Austria
The Pyhrn Autobahn is an Autobahn in Austria. It runs through the Alps by two two-lane tunnels, the 5,400-metre-long Bosrucktunnel and the 8,320-metre-long Gleinalmtunnel. The longest tunnel on the motorway is the 10-kilometre-long Plabutschtunnel under Graz and its outskirts. Wikipedia