Bronze Age - 1,000 BC
During the Bronze Age settlements continued to grow around the estuary, moving further inland as sea levels rose.
The use of coastal sand dunes are highlighted by the discovery of five Bronze age settlements at Brean Down in Somerset. Evidence that circular houses were used along with the oldest evidence from Western Europe for extracting sea salt.
Roundhouses and pottery from this period have been exposed on the foreshore at Rumney and Magor in Gwent.