LiDAR 1m DTM Hillshade
Satellite Imagery
LiDAR 1m DTM Hillshade
Satellite Imagery
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HER: Glamorgan Gwent 00582s (None)
NMR: ST 16 NE (300996)
SM: GM035
NGR: ST16856699
X: 316850 Y: 166990 (OSGB36)
Coastal promontory fort located on E end of the island with the Severn Estuary to E and Sully Bay and St Mary's Well Bay to W. N, S and E slopes precipitous, W moderate. Three widely spaced ramparts. Inner rampart, cutting off the subsidiary promontory at point of contraction, fronted by ditch, possibly revetted or walled in stone.Outermost is a ditch, scarp and bank up to 2 m high. Where the promontory narrows to E, the inner line is of another low scarp and remains of a ditch. Area only 0.4ha now, but much affected by coastal erosion and probably at least twice the size. Possible entrance at N end where there is a gap. Small flat-topped mound at end of promontory of uncertain purpose, but possible a disturbed barrow or beacon platform. Much overgrown coastal grassland and scrub. Coastal erosion and site also damaged by military. On 1st Ed. OS map (1878-9). Minimal investigations, undated.
Citizen Science: ✗
Reliability of Data: Confirmed
Reliability of Interpretation: Confirmed
X: -355844 Y: 6691603 (EPSG: 3857)
Longitude: -3.1965975541589655 Latitude: 51.39577972104411 (EPSG:4326)
Country: Wales
Current County or Unitary Authority: Vale of Glamorgan
Historic County: Glamorgan
Current Parish/Community/Council/Townland: Sully
Coastal erosion, especially to S. Site also damaged by military.
| Extant | ✓ |
| Cropmark | ✗ |
| Likely Destroyed | ✗ |
Much overgrown in part.
| Woodland | ✗ |
| Commercial Forestry Plantation | ✗ |
| Parkland | ✗ |
| Pasture (Grazing) | ✗ |
| Arable | ✗ |
| Scrub/Bracken | ✓ |
| Bare Outcrop | ✗ |
| Heather/Moorland | ✗ |
| Heath | ✗ |
| Built-up | ✗ |
| Coastal Grassland | ✓ |
| Other | ✗ |
Coastal promontory fort located on E end of the island with the Severn Estuary to E and Sully Bay and St Mary's Well Bay to W. N, S and E slopes precipitous, W moderate.
| Contour Fort | ✗ |
| Partial Contour Fort | ✗ |
| Promontory Fort | ✓ |
| Hillslope Fort | ✗ |
| Level Terrain Fort | ✗ |
| Marsh Fort | ✗ |
| Multiple Enclosure Fort | ✗ |
| Hilltop | ✗ |
| Coastal Promontory | ✓ |
| Inland Promontory | ✗ |
| Valley Bottom | ✗ |
| Knoll/Hillock/Outcrop | ✗ |
| Ridge | ✗ |
| Cliff/Plateau-edge/Scarp | ✗ |
| Hillslope | ✗ |
| Lowland | ✗ |
| Spur | ✗ |
Dominant Topographic Feature: Coastal headland
| North | ✗ |
| Northeast | ✗ |
| East | ✗ |
| Southeast | ✗ |
| South | ✗ |
| Southwest | ✗ |
| West | ✗ |
| Northwest | ✗ |
| Level | ✓ |
Altitude: 21.0m
N/A
None
Reliability: D - None
| Pre 1200BC | ✗ |
| 1200BC - 800BC | ✗ |
| 800BC - 400BC | ✗ |
| 400BC - AD50 | ✗ |
| AD50 - AD400 | ✗ |
| AD400 - AD 800 | ✗ |
| Post AD800 | ✗ |
| Unknown | ✓ |
| Pre Hillfort: | Possible disturbed barrow. |
| Post Hillfort: | None |
On 1st Ed. OS map (1878-9). RCAHMW investigation 1966. GGAT Prehistoric defended enclosures in Glamorgan survey 2005.
| Other (1966): | RCAHMW investigation. |
| Other (2005): | GGAT Prehistoric defended enclosures in Glamorgan survey. |
| 1st Identified Map Depiction (None): | OS map. |
No evidence
None
| None | ✓ |
| Spring | ✗ |
| Stream | ✗ |
| Pool | ✗ |
| Flush | ✗ |
| Well | ✗ |
| Other | ✗ |
None
| No Known Features | ✓ |
| Round Stone Structures | ✗ |
| Rectangular Stone Structures | ✗ |
| Curvilinear Platforms | ✗ |
| Other Roundhouse Evidence | ✗ |
| Pits | ✗ |
| Quarry Hollows | ✗ |
| Other | ✗ |
None
| No Known Excavation | ✓ |
| Pits | ✗ |
| Postholes | ✗ |
| Roundhouses | ✗ |
| Rectangular Structures | ✗ |
| Roads/Tracks | ✗ |
| Quarry Hollows | ✗ |
| Other | ✗ |
| Nothing Found | ✗ |
None
| No Known Geophysics | ✓ |
| Pits | ✗ |
| Roundhouses | ✗ |
| Rectangular Structures | ✗ |
| Roads/Tracks | ✗ |
| Quarry Hollows | ✗ |
| Other | ✗ |
| Nothing Found | ✗ |
None
| No Known Finds | ✓ |
| Pottery | ✗ |
| Metal | ✗ |
| Metalworking | ✗ |
| Human Bones | ✗ |
| Animal Bones | ✗ |
| Lithics | ✗ |
| Environmental | ✗ |
| Other | ✗ |
NO APPARENT FEATURES
| APs Not Checked | ✓ |
| None | ✗ |
| Roundhouses | ✗ |
| Rectangular Structures | ✗ |
| Pits | ✗ |
| Postholes | ✗ |
| Roads/Tracks | ✗ |
| Other | ✗ |
Possible entrance at the N end where there is a gap.
| 1: | None |
| 2: | None |
Guard Chambers: ✗
Chevaux de Frise: ✗
| 1. Simple Gap (North): | None |
Three widely spaced ramparts more like a defended homestead. Inner rampart, cutting off the subsidiary promontory at point of contraction, fronted by ditch, possibly revetted or walled in stone.Outermost defence is a ditch, scarp and bank up to 2 m high. Where the promontory narrows to E, the inner line is of another low scarp and remains of a ditch.
| Area 1: | 0.4ha. |
| Total: | 0.4ha. |
Total Footprint Area: Noneha.
None
| ✗ | Area only 0.4ha now, but much affected by coastal erosion and probably at least twice the size. |
| ✗ | None |
| NE Quadrant: | 0 |
| SE Quadrant: | 0 |
| SW Quadrant: | 3 |
| NW Quadrant: | 3 |
| Total: | 3 |
| Partial Univallate | ✗ |
| Univallate | ✗ |
| Partial Bivallate | ✗ |
| Bivallate | ✗ |
| Partial Multivallate | ✓ |
| Multivallate | ✗ |
| Unknown | ✗ |
| Partial Univallate | ✗ |
| Univallate | ✗ |
| Partial Bivallate | ✗ |
| Bivallate | ✗ |
| Partial Multivallate | ✗ |
| Multivallate | ✗ |
Inner rampart, cutting off the subsidiary promontory at point of contraction, fronted by ditch, possibly revetted or walled in stone.
| None | ✗ |
| Earthen Bank | ✗ |
| Stone Wall | ✓ |
| Rubble | ✗ |
| Wall-walk | ✗ |
| Evidence of Timber | ✗ |
| Vitrification | ✗ |
| Other Burning | ✗ |
| Palisade | ✗ |
| Counter Scarp Bank | ✗ |
| Berm | ✗ |
| Unfinished | ✗ |
| Other | ✗ |
None
| None | ✗ |
| Earthen Bank | ✗ |
| Stone Wall | ✗ |
| Murus Duplex | ✗ |
| Timber-framed | ✗ |
| Timber-laced | ✗ |
| Vitrification | ✗ |
| Other Burning | ✗ |
| Palisade | ✗ |
| Counter Scarp Bank | ✗ |
| Berm | ✗ |
| Unfinished | ✗ |
| No Known Excavation | ✓ |
| Other | ✗ |
| ✗ | None |
| ✓ | None |
Number of Ditches: 3
| ✗ | None |
Gerrard, C., Wiggins, H., and Evans, E. 2006. Prehistoric defended enclosures in Glamorgan with recommendations for fieldwork: Year 3 Report, GGAT Report No. 2006/089, Project No. GGAT78, Swansea: GGAT.
RCAHMW 1976. An inventory of the ancient monuments in Glamorgan, Vol I: Pre-Norman, Part II The Iron Age and the Roman occupation, No. 704, Cardiff: HMSO.
Whittle, E. 1992. A guide to ancient and historic Wales - Glamorgan and Gwent, London: HMSO, 41.
Atlas of Hillforts:
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This work is licensed under CC BY-SA 4.0
and should be cited as:
Lock, Gary and Ralston, Ian. 2024. Atlas of Hillforts of Britain and Ireland. Available at: https://hillforts.arch.ox.ac.uk
Document Version 1.1