Thetford Castle

Sketch of Thetford Castle, around 1740



  • Castle Hill, Thetford, Norfolk
  • OSGB – TL 8746 8281
  • Scheduled Monument.
  • Monument Number 1010222


Iron Age bivallate hill fort defended by a bank and ditch with the ditch measuring 16.4ft wide and 13ft deep. Medieval motte and bailey castle built within the defences, with the circular motte measuring 295.2ft in diameter and standing 80ft high. The surrounding chalk bank measuring 6.5ft high. Double bank and ditch enclosing the site.


500 BC                        c: Icini fort built.

869                              Occupied.

1066                            Soon after: Built either by Ralph Guader, Earl of East Anglia, or Roger Bigod, later Earl of East Anglia.

1173                            Destroyed by Henry II.

1772                            Eastern part of the site levelled.

1962                            Excavated.

1967                            Field Investigation.

1998                            Watching Brief.

1998                            Scheduled.

2002                            Watching Brief.


Thetford (Norfolk), Norman motte.
By Ziko-C – Own work, CC BY-SA 3.0,


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