Atlas of Hillforts of Britain and Ireland

WA1935 Castell Cynon, Pembrokeshire (Tre-Gynon Fort; Tre-Gynon Camp; Tregynon)

LiDAR 1m DTM Hillshade

LiDAR 1m DTM Hillshade

Satellite Imagery

Satellite Imagery

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HER:  Dyfed 1564 (None)

NMR:  SN 03 SE 5 (304360)

SM:  PE308(PEM)

NGR:  SN05253452

X:  205250  Y:  234520  (OSGB36)

Summary

Very small, univallate, inland promontory fort located on scarp-edge of NNW-facing promontory above wooded valley to E, stream flowing into Afon Gwaun to N. Steep slopes to N and E, moderate elsewhere. Measures c. 30m SE-NW by 20m, with internal area c. 0.1ha. Protected by the steep slopes on E and by single, substantial, curving rampart and ditch on W, rampart rising to 4m above exterior and to 2.8m above interior. No entrance defined. Stream flows into waterlogged ditch on W side and thence into ravine at both ends. Part-wooded and managed by Tregynon hotel as amenity. Site damaged by quarrying to N and crossed by old boundary bank. On 1st Ed. OS map (1889). Minimal investigations, undated.

Status

Citizen Science:  

Reliability of Data:  Confirmed

Reliability of Interpretation:  Confirmed

Location

X:  -538444  Y:  6795588  (EPSG: 3857)

Longitude:  -4.8369232976453365  Latitude:  51.974896468771355  (EPSG:4326)

Country:  Wales

Current County or Unitary Authority:  Pembrokeshire

Historic County:  Pembrokeshire

Current Parish/Community/Council/Townland:  Cwm Gwaun

Monument Condition

Bank substantial and fort managed by Tregynon hotel as amenity and regularly strimmed.

Condition:
Extant  
Cropmark  
Likely Destroyed  

Land Use

Part-wooded and managed by Tregynon hotel as amenity. Wooded to Afon Gwaun to N.

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

Very small, univallate, inland promontory fort located on scarp-edge of NNW-facing promontory above wooded valley to E, stream flowing into Afon Gwaun to N. Steep slopes to N and E, moderate elsewhere.

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:  Scarp edge of spur

Aspect:
North  
Northeast  
East  
Southeast  
South  
Southwest  
West  
Northwest  
Level  

Altitude:  175.0m

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 (1889). Field Observation OS 1966. Field Observation AMB 1981. Field Observation CADW 1991 1996, 1998, 2001. Cambria Archaeology defended enclosures survey 2006-2007.

Investigations:
1st Identified Map Depiction (1889):   OS map.
Other (1966):   Field Observation OS.
Other (1981):   Field Observation AMB
Other (None):   Field Observation CADW
Other (None):   Cambria Archaeology defended enclosures survey.

Interior Features

None

Water Source

Stream flows into waterlogged ditch on W side and thence into ravine at both ends.

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

None

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

Entrances

None defined.

Total Number of Breaks Through Ramparts:  
0:   None

Number of Possible Original Entrances:  
2:   None

Guard Chambers:  

Chevaux de Frise:  

Entrances:No related records

Enclosing Works

Protected by the steep slopes on E and by single, substantial, curving rampart and ditch on W, rampart rising to 4m above exterior and to 2.8m above interior.

Enclosed Area:
Area 1:   0.1ha.
Total:   0.1ha.

Total Footprint Area:  Noneha.

Ramparts

None

Multi-period Enclosure System:
✗   None

Ramparts Form a Continuous Circuit:
✗   None

Number of Ramparts:  
NE Quadrant:   0
SE Quadrant:   0
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

None

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:
✓   None

Number of Ditches:  1

Annex:
✗   None

References

Crossley, D.W. 1963. List of Hill-Forts and other earthworks in Pembrokeshire, Bull Board Celtic Stud, 20, 202.

Murphy, K., Ramsey, R., Poucher, P. and Page, M. 2007. A Survey of Defended Enclosures in Pembrokeshire, 2006-2007: Gazetteer of Ordnance Survey Grid Squares SN03, SN13 and SN23, Cambria Archaeology Report No. 2007/01, Project Record No. 54269, Llandeilo: Cambria Archaeology.

RCAMWM 1925. An inventory of the ancient monuments in Wales and Monmouthshire, VII, County of Pembroke, London: HMSO, No. 769.



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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