The Rottachberg is a 1115 m high mountain in the Allgäu Alps near Rettenberg. Its summit is known as Falkenstein. Ascend Two and a half hours walk from Rettenberg to Falkenstein and back. The Falkenstein is a challenging climbing area with UIAA grades VII to XI. References Mountains of the Alps Allgäu Alps Mountains of Bavaria One-thousanders of Germany Oberallgäu