East Anglia’s proximity to the Continent ensured a constant flow of migrants from across the water from the Bronze Age onwards, when large scale settlement and ritual complexes appeared in the Fens. During the Iron Age this was the territory of the Iceni, Boudica’s tribe, and a handful of well preserved hillforts survive in the area. The north Norfolk coast has also yielded the oldest homonid remains ever discovered in Europe - stone tools and bones dating from over 750,000 years ago.