Tags: Railway Line.
The Höllentalbahn (literally Hell Valley Railway) is a railway line that partially runs through the Höllental valley in the Black Forest of Germany. The line connects Freiburg im Breisgau with Donaueschingen a distance of 74.7 km (46.4 mi).Over its entire course the line rises from an altitude of 278 m (912 ft) in Freiburg to 885 m (2904 ft) in Hinterzarten. Part of the route has a 5.5% gradient making the line one of the steepest in Germany.
