Your bike in a tunnel pics

[PeteXXX]

I walked sections of that as a teen: cycling would have been near impossible on the surface back then. Also the tunnels were locked.

It's all a decent surface now. I've ridden my Brommie there, too. Plenty of nice walks in the area, including Cheedale stepping stones, as well as other places.

 

[Andy in Germany]

Bike/Pedestrian tunnel linking the two valleys in Tübingen, south Germany