Source of the Danube of Baden): “Danube, the biggest river of Germany, rises at the Martinskapelle in a wild and lonely area of the Black Forest, is called Brege at its origin and forms the river Danube in Donaueschingen where it is unified with the Brigach." (German original: „Donau, der größte Fluß Deutschlands, entspringt bei der Martinskapelle in einer wilden und einsamen Gegend des Schwarzwaldes, heißt am Anfang Brege… und bildet erst in Donaueschingen, wo sie sich mit der Brigach vereinigt, die Donau.“) The identification of the main spring in the uppermost Bregtal (also called Katzensteig) is dependent on a defining convention: Instead of
Danube Hills even exclusively restricted to this area which covered 376 km², which only covered the higher parts of the Vorderer Forest. It became major unit 405 in the natural region major unit group, the Upper Palatine-Bavarian Forest (40). English sources variously use the names Vorderer Forest, Danube Hills, Vorderer Wald, or Anterior Bavarian Forest. Regardless of this, the part designated as the "Falkensteiner Vorwald" in regional studies is also called the "Vorderer Bayerischer Wald" in German sources used for tourism purposes. However, the following description is based on the regional structure. The natural region of the Danube Hills is only 8