Seaton Down is the location of an Iron Age

British Iron Age

The British Iron Age is a conventional name used in the archaeology of Great Britain, referring to the prehistoric and protohistoric phases of the Iron-Age culture of the main island and the smaller islands, typically excluding prehistoric Ireland, and which had an independent Iron Age culture of...

 hill fort

Hill fort

A hill fort is a type of earthworks used as a fortified refuge or defended settlement, located to exploit a rise in elevation for defensive advantage. They are typically European and of the Bronze and Iron Ages. Some were used in the post-Roman period...

that takes the form of an earthwork with a large linear rampart cutting a promontory of land at the northeast end of the down off as a defensive fortification. It is slightly unusual in this layout when compared with other forts in the area. The fort is approximately 125 metres (410.1 ft) above sea level.