Following the Roman departure from Britain, the amphitheatre once again fell derelict, and the masonry was scavenged from the site leaving only a small depression at the centre of the site, which was used to stage bear fights and public executions, and was eventually completely filled in by erosion and refuse dumping. A Georgian house complex known as "Dee House" were built over the south end of the arena, while a Georgian townhouse called "St. John's House" was built over the north end. Although all records of the amphitheatre were lost, the unfavourable contours of the filled-in amphitheatre prevented roads from passing through the site, preserving the underground remains and allowing the site to later be excavated without the need for extensive demolition.