The Hahnenkamm is a mountain ridge in Bavaria (Germany), belonging to the Franconian Jura.
The Hahnenkamm is located at the southwestern border of the Franconian Jura with the foothills extending in northwestern direction.
Two streams, Westliche Rohrach and Östliche Rochrach, run through the region with the first one supplying the artificial lake Hahnenkammsee.
As for other parts of the Jura mountains, the Hahnenkamm mostly consists of Jurassic-aged sedimentary rocks, which were deposited in the former Tethys sea.
Additionally, patchy deposits of ejecta named Bunte Trümmermassen ("coloured breccia") occur, originating from the proximate Ries impact.