Cross Dyke 420m West of Chanctonbury Ring Hillfort

West Sussex

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Tagged With

Military Training Site

Data Source

English Heritage

County Council

West Sussex County Council

District Council

Horsham District Council



Parliamentary Constituency

Arundel and South Downs

Grid Reference

OV135135 (513514, 112040)

WGS84 Coordinates

50.8961, -0.385694

Nearest Postcode

BN44 3DP

The nearest postcode is an aid to location, and does not necessarily reflect the actual address of the monument. Most scheduled monuments are not occupied buildings and have no postal address or postcode of their own. In rural and coastal areas, the nearest geocodable postal address may be several miles away.


A north-south aligned cross dyke which runs circa 106 metres across a chalk ridge which forms part of the Sussex Downs. The cross dyke has a ditch circa 5 metres wide and circa 0.7 metres deep, flanked on its eastern side by a bank circa 7 metres wide. This survives to a height of circa 0.5 metres. To the north, the earthworks fade out gradually as the ground slopes away, whilst the southern end is formed by a well-defined, rounded terminal. The cross dyke has been levelled near its centre and towards its southern end by two downland tracks which cross the monument, although the ditch will survive here in buried form. The bank also shows signs of part disturbance by World War II training activities. The monument was partly excavated in 1977, when the ditch was shown to have been originally flat bottomed, with an asymmetrical profile, and the bank constructed of simply-dumped chalk and rubble and flinty-clay. A sherd of pottery found at the base of the bank indicated that the cross dyke may date to the Roman period.

English Heritage

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