* Almost square Roman fort, covering 6½ acres, with towers at the corners and four gates, a surrounding stone wall 10ft thick, and defended by a rampart and ditch.
* The most northerly of the Saxon shore forts.
2nd C Late: Roman fort.
3rd C Second quarter: Saxon shore fort covering 3.1ha. Quarry ditch dug at the west gate of the fort.
240-250 c: Built over an earlier occupied site.
3rd C Early: Garrisoned by Cohors I Aquitanorum equitatia.
3rd C Late: Garrisoned by Equites Dolmatne Branodunenses.
3rd C Late: Saxon shore fort.
4th C Settlement outside of the fort was abandoned.
17th C The walls stood 17ft high.
17th C After: The stone from the walls was robbed.
1973 Geophysical Survey..
1973 Field Investigation. Aerial Photograph.
1975 Geophysical Survey.
1976 Field Investigation.
1999 Watching Brief.