Rhine-Main-Danube Canal
From Bamberg to Fürth the canal follows the valley of the Regnitz, a tributary of the Main. From Fuerth to beyond Roth it follows the valley of the Rednitz, a tributary of the Regnitz. It crosses the Frankish Alb mountains and joins the river Altmuehl near Dietfurt. From Dietfurt to Kelheim on the Danube the canal follows the Altmuehl valley.