Photo of Bronze Age Round House. Image of Iron Age Round House at Flag Fen. Roundhouses in Britain

The Iron Age roundhouse at Flag Fen is based on excavated examples from later Iron age settlements at Fengate, and elsewhere in Britain. Houses of this general type would have been in use around 250 BC. The diameter of the walls is 10 metres, which is typical of many known roundhouses in the region. Most of the excavated examples had doorways which faced towards the east and there was no evidence for internal roof support posts; if lightweight partition walls existed ( as they may well have done) there was no archaeological evidence for them.