Source of the Danube
As early as 1847 the following definition can already be found in the "Universallexikon des Großherzogtums Baden" (Universal Lexicon of the Grand Duchy 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.“)
Source of the Danube
The spring of the river Breg is situated in the north of Furtwangen next to the St. Martin's Church near the Kolmenhof (restaurant). The Breg is for geographical and hydrological reasons longer and has a bigger water flow than the Brigach which is why its spring is the main origin of the upper Danube. The dominance of the Breg is established by the following data: