It is on a chalk ridge, aligned north-west to south-east, on the South Downs north of Shoreham-by-Sea.

It is roughly square, with sides of about 70 metres (230 ft) and area about 0.49 hectares (1.2 acres), almost levelled by ploughing.

There are two original entrances on the west and east sides, about 6 metres (20 ft) wide.

From analysis of pottery sherds from the (now infilled) ditch, it is thought that the enclosure was in use in the 10th and 9th centuries BC.

On the southern, western and eastern sides of the ridge, over an area of about 40 hectares (99 acres), a field system contemporary with the Romano-British village can be discerned from earthworks up to 0.5 metres (1 ft 8 in) high and by crop marks visible from the air.