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.“)
Danube Valley Railway (Baden-Württemberg)
The Danube Valley Railway (German: Donautalbahn or Donaubahn) in Baden-Württemberg in south-western Germany is a 133.8-kilometre-long railway running from the city of Ulm to Immendingen, which is largely single-tracked and for the most part not electrified. The line is famous especially for its charming course through the Upper Danube Nature Park ("Naturpark Obere Donau"), and is particularly attractive to bicycle tourists. The Royal Württemberg State Railways and the Grand Duchy of Baden State Railways built the line as part of the railway projects undertaken between 1865 and 1890. The construction of the section between Tuttlingen and Inzigkofen was pushed through by the German general staff, for whom the Danube Valley Railway was seen as a strategic railway in case of another war with France. Since 1901, the Danube Valley Railway, together with the Höllentalbahn (Schwarzwald), form part of the pan-regional railway link from Ulm to Freiburg im Breisgau.