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HER:  Glamorgan Gwent 00192s (None)
NMR:  SS 97 NE 6 (307565)
SM:  None
NGR:  SS96727905
X:  296720  Y:  179050  (OSGB36)
Sub-circular hillslope fort located on NE-facing slopes of St Mary Hill Down above the Ewenny River to W and E to headwaters of River Thaw. Moderate to strong surrounding slopes. Site c 46m-50m in diameter of 0.2ha interior area. Defined by bank and ditch c. 20m wide by nearly 1m high overall where best preserved. Entrance to an curvilinear annexe at its E end, immediately within this is simple gap leading into main enclosure. The annexe bank is slightly inturned. Another gap, probably original, opposite this on NW. All gaps c. 3m wide. Pasture with tree clump on SSE. Site ploughed down. Minimal investigations, undated.
Citizen Science:  ✗
Reliability of Data:  Confirmed
Reliability of Interpretation:  Confirmed
X:  -388435  Y:  6710375  (EPSG: 3857)
Longitude:  -3.4893734532198524  Latitude:  51.500872619897045  (EPSG:4326)
Country:  Wales
Current County or Unitary Authority:  Vale of Glamorgan
Historic County:  Glamorgan
Current Parish/Community/Council/Townland:  Llangan
Worn down by past cultivation.
| Extant   | ✓ |
| Cropmark   | ✗ |
| Likely Destroyed   | ✗ |
Pasture. Tree clump on SSE.
| Woodland   | ✗ |
| Commercial Forestry Plantation   | ✗ |
| Parkland   | ✗ |
| Pasture (Grazing)   | ✓ |
| Arable   | ✗ |
| Scrub/Bracken   | ✗ |
| Bare Outcrop   | ✗ |
| Heather/Moorland   | ✗ |
| Heath   | ✗ |
| Built-up   | ✗ |
| Coastal Grassland   | ✗ |
| Other   | ✗ |
Sub-circular hillslope fort located on NE-facing slopes of St Mary Hill Down above the Ewenny River to W and E to headwaters of River Thaw. Moderate to strong surrounding slopes.
| 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:  Hillslope
| North   | ✗ |
| Northeast   | ✓ |
| East   | ✗ |
| Southeast   | ✗ |
| South   | ✗ |
| Southwest   | ✗ |
| West   | ✗ |
| Northwest   | ✗ |
| Level   | ✗ |
Altitude:  95.0m
N/A
None
Reliability:  D - None
| Pre 1200BC   | ✗ |
| 1200BC - 800BC   | ✗ |
| 800BC - 400BC   | ✗ |
| 400BC - AD50   | ✗ |
| AD50 - AD400   | ✗ |
| AD400 - AD 800   | ✗ |
| Post AD800   | ✗ |
| Unknown   | ✓ |
| Pre Hillfort:   | None |
| Post Hillfort:   | None |
RCAHMW investigation 1966. GGAT Prehistoric defended enclosures in Glamorgan survey 2005.
| Other (1966):   | RCAHMW investigation. |
| Other (2005):   | GGAT Prehistoric defended enclosures in Glamorgan survey. |
None
Stream 1.15 km outside fort.
| 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   | ✗ |
None
| APs Not Checked   | ✓ |
| None   | ✗ |
| Roundhouses   | ✗ |
| Rectangular Structures   | ✗ |
| Pits   | ✗ |
| Postholes   | ✗ |
| Roads/Tracks   | ✗ |
| Other   | ✗ |
Entrance into main enclosure, probably original, on NW. Entrance to annexe at its E end, immediately within this simple gap leading into main enclosure. The annexe bank is slightly inturned. All gaps c. 3m wide.
| 3:   | None |
| 2:   | None |
Guard Chambers:  ✗
Chevaux de Frise:  ✗
| 1. Simple Gap (North west):   | Entrance into main enclosure. |
| 2. In-turned (South east):   | Entrance into annexe from main enclosure |
Defined by bank and ditch c. 20m wide by nearly 1m high overall where best preserved.
| Area 1:   | 0.2ha. |
| Total:   | 0.2ha. |
Total Footprint Area:  Noneha.
None
| ✗   | None |
| ✓   | None |
| NE Quadrant:   | 1 |
| SE Quadrant:   | 1 |
| SW Quadrant:   | 1 |
| NW Quadrant:   | 1 |
| Total:   | 1 |
| Partial Univallate   | ✗ |
| Univallate   | ✓ |
| Partial Bivallate   | ✗ |
| Bivallate   | ✗ |
| Partial Multivallate   | ✗ |
| Multivallate   | ✗ |
| Unknown   | ✗ |
| Partial Univallate   | ✗ |
| Univallate   | ✗ |
| Partial Bivallate   | ✗ |
| Bivallate   | ✗ |
| Partial Multivallate   | ✗ |
| Multivallate   | ✗ |
None
| 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:  2
| ✓   | Curvilinear annexe on the SW, measuring about 55m from NW-SE by 28m protected by bank and ditch. |
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, 1.2, Pre-Norman, Parts I-III, 660, Cardiff: HMSO.
Atlas of Hillforts:
Wikidata:
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