Showing 2 auto-routed bicycle routes (using Map of E 18graphhopper) between the two ends of the tunnel. Download gpx file: map38515777.gpx. Openstreetmap tags:
highway = trunk_link lanes = 1 layer = -1 oneway = yes ref = E 18 tunnel = yes
highway = trunk_link lanes = 1 layer = -1 oneway = yes ref = E 18 tunnel = yes