Belgae Britain after participating in Vercingetorix's rebellion and either joined or established a British branch of his tribe. Based on the development of imagery on coins, by the time of the Roman conquest, some of the tribes of south-eastern Britain likely were ruled by a Belgic nobility and were culturally influenced by them. The later "civitas" (administrative division) of Roman Britain had towns including "Portus Adurni" (Portchester), and "Clausentum" (Southampton). The "civitas" capital was at "Venta Belgarum" (Winchester), which was built on top of an Iron Age "oppidum" (which was itself built on the site of two earlier abandoned hillforts), which
Venta Icenorum south of present-day Norwich, and a mile or two from the Bronze Age henge at Arminghall. It lies on the River Tas. The embankments of Venta Icenorum can still be seen at Caistor today. The ruins (British National Grid ref TG230034) are in the care of the Norfolk Archaeological Trust and managed by South Norfolk District Council. Venta Icenorum Venta Icenorum, located at modern-day Caistor St Edmund in the English county of Norfolk, was the civitas or capital of the Iceni tribe, who inhabited the flatlands and marshes of that county and are famous for having revolted against Roman rule