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Castle well

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Castle well

The well at Königstein Fortress

A castle well[1] was a water well built to supply drinking water to a castle. It was often the most costly and time-consuming element in the building of a castle, and its construction time could span several decades.

The well – as well as any available cisterns – provided a protected source of drinking water for the castle garrison in peace and war and also for any civil population seeking refuge during a siege. In medieval times, external wells were often poisoned, usually with a decomposing body, in order to force a garrison to surrender. But wells sunk within the castle itself could not be poisoned from outside during a siege.


Construction

Wells often had to be sunk a considerable depth in order to tap the nearest geological stratum holding sufficient water, the actual depth depending on the height of the castle and level of the groundwater. This was particularly challenging in the construction of hill castles. In addition, there was also the problem of providing sufficient oxygen for well diggers as they dug the well out of the rock by hand.

In order to supply fresh air to the well diggers during construction, a dividing wall, usually of wood, was built into the well shaft, any gaps being stuffed with straw and pitch to make it as airtight as possible. Over the projecting "chimney" so formed, a fireplace was built that sucked air through the well shaft below. Fresh air (and hence oxygen) circulated through the artificially built U-shaped pipe so created, its two halves being separated by the dividing wall. This supplied fresh air at the "bend" which provided the diggers with sufficient oxygen.

Notable examples

Several of the deepest castle wells in the world are in Germany. They include those at Kyffhausen Castle (176 metres), Königstein Fortress (152 metres) and the Hohenburg in Homberg (150 metres). In addition there is the well at Stolpen Castle (82 metres) which is the deepest well driven into basalt in the world. According to historic sources there was once a castle well over 197 metres deep at Regenstein Castle near Blankenburg in the Harz Mountains. This was, however, filled in long ago. By comparison, the deepest castle well in England is at Dover Castle (107 metres).[2]

References

  1. ^ The Medieval Castle: Romance and Reality ed. by Kathryn L. Reyerson, Faye Powe, p. 6. Retrieved 18 Nov 2013.
  2. ^ Friar, Stephen (2003). The Sutton Companion to Castles, Sutton Publishing, Stroud, 2003, p.327. ISBN 978-0-7509-3994-2

Literature

  • Axel W. Gleue: Wie kam das Wasser auf die Burg - Vom Brunnenbau auf Höhenburgen und Bergvesten. 1st edn., Verlag Schnell und Steiner, Regensburg, 2008, ISBN 978-3-7954-2085-7.
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