Best hard trails in Immendingen

Interesting, certified premium hiking trail in Donaubergland, Baden-Württemberg. This route in the Swabian Alb leads along varied forests and landscapes. The Danube sinkhole is a popular tourist destination that can be observed from the riverside path or from the riverbed itself. The Danube flows across the European watershed into the Black Sea - but thanks to the Danube sinking, some of the water flows through underground cavities near Immendingen to the Aachtopf, Germany's largest...