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HER:  Glamorgan Gwent 00464w (None)
NMR:  SS 69 SE (None)
SM:  None
NGR:  SS67559434
X:  267550  Y:  194340  (OSGB36)
Small oval fort sited on N side of Kilvey Hill, Swanea, near Llwynlheiernin fort (Atlas No 1652) (0.35km) and overlooking the River Tawe 1.2km away. Moderate to strong surrounding slopes. Measures 45m WNW-ESE by 37m wide with internal area 0.1ha. Defined by single bank, best on W, where to 1.3 internally, but only a scarp on S and ploughed out on E where boundary bank. Ditch now only possibly visible on NW where wide and shallow. No entrance defined. On N fort bounded by a straight terrace nearly 1m high. Hollows in interior possibly site of modern building of uncertain date. Rough grass and trees. Minimal investigations, undated.
Citizen Science:  ✗
Reliability of Data:  Confirmed
Reliability of Interpretation:  Confirmed
X:  -435835  Y:  6733892  (EPSG: 3857)
Longitude:  -3.9151704808762435  Latitude:  51.63218965893044  (EPSG:4326)
Country:  Wales
Current County or Unitary Authority:  Swansea
Historic County:  Glamorgan
Current Parish/Community/Council/Townland:  Bonymaen
Damaged and bank only a scarp on S and ploughed out on E. Access road abuts site on E.
| Extant   | ✓ |
| Cropmark   | ✗ |
| Likely Destroyed   | ✗ |
Rough grass and trees.
| Woodland   | ✓ |
| Commercial Forestry Plantation   | ✗ |
| Parkland   | ✗ |
| Pasture (Grazing)   | ✓ |
| Arable   | ✗ |
| Scrub/Bracken   | ✗ |
| Bare Outcrop   | ✗ |
| Heather/Moorland   | ✗ |
| Heath   | ✗ |
| Built-up   | ✗ |
| Coastal Grassland   | ✗ |
| Other   | ✗ |
Small site on N side of Kilvey Hill, Swanea, near Llwynlheiernin fort (0.35km) and overlooking the River Tawe 1.2km away. 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:  152.0m
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 1961. GGAT Prehistoric defended enclosures in Glamorgan survey 2005.
| Other (1961):   | RCAHMW investigation. |
| Other (2005):   | GGAT Prehistoric defended enclosures in Glamorgan survey. |
Oval shaped area c. 15m by 9m, divided into two roughly circular hollows by 1m high bank possibly site of modern building of uncertain date.
Spring site in S hollow.
| None   | ✗ |
| Spring   | ✓ |
| Stream   | ✗ |
| Pool   | ✗ |
| Flush   | ✗ |
| Well   | ✗ |
| Other   | ✗ |
Oval shaped area c. 15m by 9m, divided into two roughly circular hollows by 1m high bank possibly site of modern building of uncertain date.
| 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 not defined.
| 0:   | None |
| 2:   | None |
Guard Chambers:  ✗
Chevaux de Frise:  ✗
Defined by single bank, best on W, where to 1.3 internally, but only a scarp on S and ploughed out on E where boundary bank. Ditch now only possibly visible on NW where wide and shallow.
| Area 1:   | 0.1ha. |
| Total:   | 0.1ha. |
Total Footprint Area:  Noneha.
None
| ✗   | None |
| ✗   | None |
| NE Quadrant:   | 0 |
| SE Quadrant:   | 0 |
| 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   | ✗ |
Earth and stone bank.
| 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 |
| ✓   | Possibly visible on NW. |
Number of Ditches:  1
| ✗   | 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. 651, 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