Rhine tunnel access View fullsize I believe this is the entrance of a tunnel that runs below the Rhine, to the other side. I like that is covered by bird drawings. Switzerland, Sketchbook Caran d'Ache, City corners, 2019Enrico MartinaJanuary 8, 2019Basel, Rhein, Rhine, tunnel, graffiti, Dreirosenbrücke, bridgeComment Facebook0 Twitter Reddit Tumblr 0 Likes