Ancient Monuments

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Lewes Castle Promontory Fort

A Scheduled Monument in Rhossili (Rhosili), Swansea (Abertawe)

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Latitude: 51.5625 / 51°33'44"N

Longitude: -4.2888 / 4°17'19"W

OS Eastings: 241446

OS Northings: 187329

OS Grid: SS414873

Mapcode National: GBR GQ.5JR3

Mapcode Global: VH3MV.MZ1K

Entry Name: Lewes Castle Promontory Fort

Scheduled Date: 31 October 1994

Source: Cadw

Source ID: 3626

Cadw Legacy ID: GM470

Schedule Class: Defence

Category: Promontory Fort - coastal

Period: Prehistoric

County: Swansea (Abertawe)

Community: Rhossili (Rhosili)

Built-Up Area: Rhossili

Traditional County: Glamorgan


The monument comprises the remains of a defended enclosure, which probably dates to the Iron Age period (c. 800 BC - AD 74). It is located on a rocky headland. Two concentric ramparts and ditches cross the neck of the promontory, beyond which it rises to a summit. The inner bank and ditch, with two right angles lengths, each c. 5.5m wide and 1m high, cuts off a shallow hollow in the lee of the headland. The outer bank and ditch, 9m overall by c. 1m deep, curves round in an arc, its ends resting on the cliff edge.

The monument is of national importance for its potential to enhance our knowledge of later prehistoric defensive organisation and settlement. The site forms an important element within the wider later prehistoric context and within the surrounding landscape. The site is well preserved and retains considerable archaeological potential. There is a strong probability of the presence of evidence relating to chronology, layout, building techniques and functional detail.

The scheduled area comprises the remains described and areas around them within which related evidence may be expected to survive.

Source: Cadw

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