Showing 8 auto-routed bicycle routes (using Map of 4graphhopper) between the two ends of the tunnel. Download gpx file: map19394335.gpx. Openstreetmap tags:
bicycle = no foot = no highway = trunk layer = -1 maxspeed = 50 ref = 4 tunnel = yes
bicycle = no foot = no highway = trunk layer = -1 maxspeed = 50 ref = 4 tunnel = yes