The hiking trail leads almost continually through the riverside woodlands of the Rhein, which here gets pushed aside by the walls of moraine at the foothills of the Schwarzwald. Ruins of several Roman watch towers lie alongside the trail as well as the «Bürkli» earthworks at Riburg.The hiking trail leads almost continually through the riverside woodlands of the Rhein, which here gets pushed aside by the walls of moraine at the foothills of the Schwarzwald. Ruins of several Roman watch towers lie alongside the trail as well as the «Bürkli» earthworks at Riburg.