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Medieval Castle Shell-Keeps

t the heart of motte and bailey castles is the motte, the mound of earth on which a keep was usually built. At the top of the motte around its edge a wooden palisade was constructed to protect the keep from attack. Sometimes the motte was large enough and strong enough for the wooden palisade to be replaced by stone. These stone structures are known as shell-keeps. There are two forms of shell-keep. The first type is where the structure is located on the top of the motte. The second type of shell-keep is where the keep totally encloses the motte itself so its base extends down to the ditch surrounding the motte.

Restormel Castle, Cornwall

The plan on the left shows Restormel Castle in Cornwall which is an excellent example of a shell-keep. The keep is just over 100 feet in diameter, almost perfectly circular in shape and sits on top of the motte. A gatehouse on one side and the chapel on the other extend out into the ditch that surrounds the motte. Inside the outer wall of the keep is a second circular inner wall and between these two walls are the chambers that form the two floors of rooms of the castle.

The inner courtyard was open to the elements but this is not the case with all shell-keeps. The top of the outer wall had battlements and there would have been a wall-walk around the edge for guards to keep watch.

Rooms within the castle would have included a kitchen, a hall for entertainment and meetings, sleeping and living chambers for the owners and their attendants, a chapel and a room for the castle guard.

Shell-Keeps: Built on top of the motte

Castle Name Date Location Notes On this site
Arundel Castle West Sussex 
Cardiff Castle Glamorgan 
Carisbrooke Castle Isle of Wight 
Launceston Castle Cornwall 
Restormel Castle Cornwall 
Totnes Castle Devon 
Windsor Castle Berkshire 
York Castle Yorkshire 

Shell-Keeps: Built surrounding the motte

Castle Name Date Location Notes On this site
Berkeley Castle Gloucestershire 
Farnham Castle Surrey 
Carmarthen Castle Carmarthenshire 




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