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Title: Hohentwiel  
Author: World Heritage Encyclopedia
Language: English
Subject: FuG 200 Hohentwiel, Volcano
Publisher: World Heritage Encyclopedia


Aerial photo of the Hohentwiel
Elevation 686 m (2,251 ft)
Hohentwiel is located in Baden-Württemberg
The location within Baden-Württemberg
Location Baden-Württemberg, Germany

Hohentwiel is an extinct volcano in the Hegau region of Baden-Württemberg in southern Germany The mountain lies to the west of the city of Singen and 20 miles (30 km) from Lake Constance.

Hohentwiel began forming, along with the chain of volcanoes in the Hegau region, about 7–8 million years ago, when a layer of volcanic ash and stone was laid down. The magma consists of Phonolite. In the following millions of years, the core was opened 260 metres beneath the surface by the glaciers from the ice age. This formed the core that is now exposed, after the ensuing millions of years of erosion.

The fortress, whose ruins lie on top of Hohentwiel, was constructed in 914 using stone taken from the mountain itself by Stein am Rhein (now in Switzerland), and the Swabian dukes lost control of Hohentwiel. In the later Middle Ages the noble families von Singen-Twiel (12th–13th centuries), von Klingen (to 1300) and von Klingenberg (to 1521) resided here. In 1521, it was passed on to Duke Ulrich von Württemberg, who developed Hohentwiel into one of the strongest fortresses of his duchy. During this time, it began to be used as a prison and in 1526, Hans Müller von Bulgenbach, a peasant commander, was imprisoned there prior to his execution.[1]

The fortress resisted five Imperial sieges in the Thirty Years' War, under the command of Konrad Widerholt[2] between 1634 and 1648.[3] The effect was that Württemberg remainded protestant, while most of the surrounding areas returned to catholicism in the Counterreformation .[4] The castle served as a Württemberg prison in the 18th century and was destroyed in 1800 after being peacefully handed over by the French. Today the former fortress Hohentwiel is the biggest castle ruin of Germany.

The modern city of Singen nestles at the foot of the mountain.

See also


  1. ^ Miller, Douglas. Armies of the German Peasants' War 1524–1526. Oxford: Osprey Publishing, 2003.
  2. ^ Konrad Widerholt
  3. ^ Ludwig Finckh: Konrad Widerholt, Ein Mann in Hegau; Silberburg Verlag, Stutgart, 1960
  4. ^ Casimir Bumiller: Hohentwiel. Die Geschichte einer Burg zwischen Festungsalltag und großer Politik. Stadler, Konstanz, 1990, ISBN 3-7977-0208-6

External links

  • virtual Hohentwiel tour
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