Viamala in Hinterrhein, Switzerland
There was a path through the Viamala already in Roman antiquity, though it is not clear whether it was only a foot and bridle path or if it could also be used by wagons. Two access paths met at the northern entrance to the Viamala, which the Romans traversed by means of several rock galleries cut into the walls on the left side of the gorge. Presumably somewhere below today’s automobile bridge and near the pedestrian bridge (Punt da Suransuns) the Romans constructed a wooden bridge crossing over to the right side of the Rhine, routing traffic via Reischen to Zillis.
One of the highest paved roads in Europe.
The Viamala was used by the German film director Werner Herzog as a location in his 1976 film Heart of Glass.