Cadbury multivallate hillfort on the summit of Cadbury Hill, a natural and commanding ridge separating the Gordano Valley from the Somerset Levels.

Early Cadbury: c.1000-300BC, occupation & building of the first ramparts.

Middle Cadbury: 300BC-AD40/50,  addition of the outer ramparts.

Late Cadbury: AD40/50-400, a possible Roman attack, indication of Roman barracks.