Atlas of Hillforts of Britain and Ireland

WA2126 Grongaer, Llangathen, Carmarthenshire (Grongar Hill)

LiDAR 1m DTM Hillshade

LiDAR 1m DTM Hillshade

Satellite Imagery

Satellite Imagery

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HER:  Dyfed 704 (None)

NMR:  SN 52 SE 2 (303981)

SM:  CM082(CAM)

NGR:  SN57342160

X:  257340  Y:  221600  (OSGB36)

Summary

Located on summit of isolated and very prominent NE-SW hill overlooking bends of the Afon Tywi near its confluence with the Afon Myddyfi and Afon Tywi. Views in all directions. Opposite Dryslwyn Castle (Atlas No. 2124). Steep surrounding slopes on N, S and E, slightly less on W. Roughly rectangular in plan, measuring c. 110m NNW-SSE by 140m-190m, with internal area 1.2ha. Defined by single rampart with traces of ditch. Bank to 5m high externally, with slight berm indicating position of ditch. Bank best on NE and SW sides. Simple and damaged entrances on NE and SW; not so pronounced on NW and SE. Damaging farm track NE-SW through fort and entrances. Under improved pasture with trees and scrub on banks. On 1st Ed. OS map (1887). Minimal investigations, undated.

Status

Citizen Science:  ✗

Reliability of Data:  Confirmed

Reliability of Interpretation:  Confirmed

Location

X:  -453492  Y:  6777489  (EPSG: 3857)

Longitude:  -4.073786837941621  Latitude:  51.8746336567406  (EPSG:4326)

Country:  Wales

Current County or Unitary Authority:  Carmarthenshire

Historic County:  Carmarthenshire

Current Parish/Community/Council/Townland:  Llangathen

Monument Condition

Damaging farm track NE-SW through fort and entrances.

Condition:
Extant   ✓
Cropmark   ✗
Likely Destroyed   ✗

Land Use

Improved pasture with trees and scrub on banks.

Current Use:
Woodland   ✗
Commercial Forestry Plantation   ✗
Parkland   ✗
Pasture (Grazing)   ✓
Arable   ✗
Scrub/Bracken   ✗
Bare Outcrop   ✗
Heather/Moorland   ✗
Heath   ✗
Built-up   ✗
Coastal Grassland   ✗
Other   ✗

Landscape

Hillfort Type

Contour hillfort located on an isolated and very prominent hill overlooking bends of the Afon Tywi near its confluence with the Afon Myddyfi and Afon Tywi. Steep surrounding slopes on N, S and E, slightly less on W.

Type:
Contour Fort   ✓
Partial Contour Fort   ✗
Promontory Fort   ✗
Hillslope Fort   ✗
Level Terrain Fort   ✗
Marsh Fort   ✗
Multiple Enclosure Fort   ✗

Topographic Position

Position:
Hilltop   ✓
Coastal Promontory   ✗
Inland Promontory   ✗
Valley Bottom   ✗
Knoll/Hillock/Outcrop   ✗
Ridge   ✗
Cliff/Plateau-edge/Scarp   ✗
Hillslope   ✗
Lowland   ✗
Spur   ✗

Dominant Topographic Feature:  Hill top

Aspect:
North   ✗
Northeast   ✗
East   ✗
Southeast   ✗
South   ✗
Southwest   ✗
West   ✗
Northwest   ✗
Level   ✓

Altitude:  140.0m

Boundary

N/A


Dating Evidence

None

Reliability:  D - None

Principal Activity:
Pre 1200BC   ✗
1200BC - 800BC   ✗
800BC - 400BC   ✗
400BC - AD50   ✗
AD50 - AD400   ✗
AD400 - AD 800   ✗
Post AD800   ✗
Unknown   ✓

Other Activity:
Pre Hillfort:   None
Post Hillfort:   None

Evidence:No related records

Investigation History

On 1st Ed. OS map (1887). Field observations 1968. Field observations CADW 1886, 1992, 1998. Dyfed Archaeological Trust defended enclosures survey 2007-2008.

Investigations:
1st Identified Map Depiction (1887):   OS map.
Other (1968):   Field observations OS.
Other (None):   Field observations CADW.
Other (None):   Dyfed Archaeological Trust defended enclosures survey

Interior Features

None

Water Source

Afon Tywi 0.55 km outside fort.

Source:
None   ✓
Spring   ✗
Stream   ✗
Pool   ✗
Flush   ✗
Well   ✗
Other   ✗

Surface

None

Interior Features (Surface):
No Known Features   ✓
Round Stone Structures   ✗
Rectangular Stone Structures   ✗
Curvilinear Platforms   ✗
Other Roundhouse Evidence   ✗
Pits   ✗
Quarry Hollows   ✗
Other   ✗

Excavation

None

Interior Features (Excavation):
No Known Excavation   ✓
Pits   ✗
Postholes   ✗
Roundhouses   ✗
Rectangular Structures   ✗
Roads/Tracks   ✗
Quarry Hollows   ✗
Other   ✗
Nothing Found   ✗

Geophysics

None

Interior Features (Geophysics):
No Known Geophysics   ✓
Pits   ✗
Roundhouses   ✗
Rectangular Structures   ✗
Roads/Tracks   ✗
Quarry Hollows   ✗
Other   ✗
Nothing Found   ✗

Finds

None

Interior (Finds):
No Known Finds   ✓
Pottery   ✗
Metal   ✗
Metalworking   ✗
Human Bones   ✗
Animal Bones   ✗
Lithics   ✗
Environmental   ✗
Other   ✗

Aerial

NO APPARENT FEATURES

Interior Features (Aerial):
APs Not Checked   ✓
None   ✗
Roundhouses   ✗
Rectangular Structures   ✗
Pits   ✗
Postholes   ✗
Roads/Tracks   ✗
Other   ✗

Entrances

Simple and damaged entrances on NE and SW.

Total Number of Breaks Through Ramparts:  
2:   None

Number of Possible Original Entrances:  
2:   None

Guard Chambers:  ✗

Chevaux de Frise:  ✗

Entrances:
1. Simple Gap (North east):   Damaged.
2. Simple Gap (South west):   Damaged.

Enclosing Works

Defined by single rampart with traces of ditch. Bank to 5m high externally, with slight berm indicating position of ditch. Bank best on NE and SW sides.

Enclosed Area:
Area 1:   1.2ha.
Total:   1.2ha.

Total Footprint Area:  Noneha.

Ramparts

None

Multi-period Enclosure System:
✗   None

Ramparts Form a Continuous Circuit:
✓   None

Number of Ramparts:  
NE Quadrant:   1
SE Quadrant:   1
SW Quadrant:   1
NW Quadrant:   1
Total:   1

Morphology

Current Morphology:
Partial Univallate   ✗
Univallate   ✓
Partial Bivallate   ✗
Bivallate   ✗
Partial Multivallate   ✗
Multivallate   ✗
Unknown   ✗

Detailed Morphology:
Partial Univallate   ✗
Univallate   ✗
Partial Bivallate   ✗
Bivallate   ✗
Partial Multivallate   ✗
Multivallate   ✗

Surface Evidence

Berm indicates position of ditch.

Enclosing Works (Surface):
None   ✗
Earthen Bank   ✓
Stone Wall   ✗
Rubble   ✗
Wall-walk   ✗
Evidence of Timber   ✗
Vitrification   ✗
Other Burning   ✗
Palisade   ✗
Counter Scarp Bank   ✗
Berm   ✓
Unfinished   ✗
Other   ✗

Excavated Evidence

None

Enclosing Works (Excavation):
None   ✗
Earthen Bank   ✗
Stone Wall   ✗
Murus Duplex   ✗
Timber-framed   ✗
Timber-laced   ✗
Vitrification   ✗
Other Burning   ✗
Palisade   ✗
Counter Scarp Bank   ✗
Berm   ✗
Unfinished   ✗
No Known Excavation   ✓
Other   ✗

Other

Gang Working:
✗   None

Ditches:
✓   Position of ditch visible as berm

Number of Ditches:  1

Annex:
✗   None

References

Murphy, F., Ramsey, R., Page, M. and Murphy, K. 2008. A Survey of Defended Enclosures in Carmarthenshire, 2007-08: Gazetteer of Ordnance Survey Grid Squares SN51, SN52 and SN54, Dyfed Archaeological Trust Report No. 2007/27, Project Record No. 62767, Llandeilo: Dyfed Archaeological Trust.

Royal Commission on the ancient and historical monuments and constructions in Wales and Monmouthshire 1917. An inventory of the ancient monuments in Wales and Monmouthshire, V, Carmarthen, 451, London: HMSO.

Savory, H.N. 1954. List of hill-forts and other earthworks in Carmarthenshire. Bull Board Celtic Stud, 16, 56.



Terms of Use

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


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