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A cross-wall is an interior dividing wall of a castle. It may be an external wall dividing, for example, the inner and outer wards, or it may be a wall internal to a building such as the keep.
An example of the external variety is the cross-wall dividing the inner bailey of Carmarthen Castle in Wales. At Rochester Castle in Kent, the cross-wall within the keep was used for protection when the castle was attacked in 1215.
References
^ Friar, Stephen (2003). The Sutton Companion to Castles, Sutton Publishing, Stroud, 2003, p. 85. ISBN978-0-7509-3994-2
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