Atlas of Hillforts of Britain and Ireland

WA2005 Castles Bay, Pembrokeshire (Sheep Island)

Satellite Imagery

Satellite Imagery

HER:  Dyfed 3065 (None)

NMR:  SM 80 SW 21 (305360)

SM:  PE411 (PEM)

NGR:  SM 8455 0182

X:  184550  Y:  201820  (OSGB36)

Summary

Fairly large for the area and complex coastal promontory fort located on SW-facing headland dominating the entrance to Milford Haven opposite Dale Point and St Ann's Head. Sheep Island is c. 60m offshore on SW, which could have been connected to mainland in prehistory and may have been part of the site. High sea cliffs to 30m on N, S and W sides, moderate slope landward to NE. Three areas to site: Firstly, area just inside rampart. Second a knoll divided from first area by deep gully and thirdly Sheep Island itself. Bank and ditch cut off the narrowest neck of the promontory on the NE running 75m from cliff edge to enclose the first area as an irregular area c. 80m N-S by 40m E-W. Bank stands at c. 2.8m above the ditch, although this and the interior much disturbed by military installations. Encloses 0.8ha. Simple gap entrance towards SE end of bank. Affected here by sea erosion. Steep natural gully separates the first area from the second, and possible hint of second line of defence here along gully. Traces of mortared stone wall also and possible medieval castle site. Rectangular hollows in interior reported by Crossley (1963, 176-77) and suggested as hut platforms in RCAHMW Inventory of 1925, but thought possibly military by Ordnance Survey. Aerial photography by RCAHMW in 2002 shows house platforms also on the site against N. side. Third area, Sheep Island, Iron Age and Romano-British pottery found and hut platforms possible. It is possible that hut platforms do exist in the interior, but these have been confused and masked by modern military installations. Coastal grassland and bare rock; tussocky on Sheep Island. On 1st Ed. OS map (1875).

Status

Citizen Science:  ✗

Reliability of Data:  Confirmed

Reliability of Interpretation:  Confirmed

Location

X:  -569677  Y:  6741337  (EPSG: 3857)

Longitude:  -5.117496069560024  Latitude:  51.67368382400097  (EPSG:4326)

Country:  Wales

Current County or Unitary Authority:  Pembrokeshire

Historic County:  Pembrokeshire

Current Parish/Community/Council/Townland:  Angle

Monument Condition

Affected by Pembrokeshire Coast Path to NE. Military installations damaged site.

Condition:
Extant   ✓
Cropmark   ✗
Likely Destroyed   ✗

Land Use

Coastal grassland and bare rock; tussocky on Sheep Island. Military installations.

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

Fairly large for the area and complex coastal promontory fort located on SW-facing headland dominating the entrance to Milford Haven opposite Dale Point and St Ann's Head. Sheep Island is c. 60m offshore on SW, which could have been connected to mainland in prehistory and may have been part of the site. High sea cliffs to 30m on N, S and W sides, moderate slope landward to NE.

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:  Coastal headland

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

Altitude:  31.0m

Boundary

N/A


Dating Evidence

Possibly Iron Age and Romano-British pottery found on Sheep Island off the promontory.

Reliability:  C - Low

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:
Artefactual:   Chance finds of Roman-British pottery on Sheep Island.
Morphology/Earthwork/Typology:   Possibly Iron Age.

Investigation History

Described by George Owen c. 1600. On 1st Ed. OS map (1875). Field Observation OS 1965, 1975. Field Observation DAT 1994, 1996, 1999. Cambria Archaeology defended enclosures survey 2006-2007.

Investigations:
1st Identified Written Reference (1600):   Described by George Owen.
1st Identified Map Depiction (1875):   OS map.
Other (None):   Field observation OS.
Other (None):   Field observation DAT.
Other (None):   Cambria Archaeology defended enclosures survey.

Interior Features

Rectangular hollows thought possibly later military by Ordnance Survey and not hut circles as RCAHMW Inventory of 1925 suggests, but this is uncertain and modern aerial photography by RCAHMW in 2002 shows house platforms on site against N side. It is likely that more hut platforms do exist in the interior, but these have been confused and masked by modern military installations. Hut platforms possible on Sheep Island.Chance finds of Roman-British pottery on Sheep Island.

Water Source

Stream 0.35km outside fort.

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

Surface

Rectangular hollows thought possibly later military by Ordnance Survey and not hut circles as RCAHMW Inventory of 1925 suggests, but this is uncertain and modern aerial photography by RCAHMW in 2002 shows house platforms on site against N side. It is likely that more hut platforms do exist in the interior, but these have been confused and masked by modern military installations. Hut platforms possible on Sheep Island.

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

Chance finds of Roman-British pottery on Sheep Island.

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

Aerial

Aerial photography (RCAHMW 2002) shows house platforms against N side.

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

Entrances

Simple gap entrance towards SE end of bank.

Total Number of Breaks Through Ramparts:  
1:   None

Number of Possible Original Entrances:  
2:   None

Guard Chambers:  ✗

Chevaux de Frise:  ✗

Entrances:
1. Simple Gap (South east):   None

Enclosing Works

Bank and ditch cut off the narrowest neck of the promontory on the NE running 75m from cliff edge to enclose the first area as an irregular area c. 80m N-S by 40m E-W. Bank stands at c. 2.8m above the ditch. Possible second line of defence along gully where traces of mortared stone wall.

Enclosed Area:
Area 1:   0.8ha.
Total:   0.8ha.

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:   0
SW Quadrant:   0
NW Quadrant:   0
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

Probably stone-walled site. Traces of mortared stone wall along gully possibly medieval?

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, 176-77.

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 SM70 and SM80, Cambria Archaeology Report No. 2007/01, Project Record No. 54269, Llandeilo: Cambria Archaeology.

RCAMWM 1925: Pembrokeshire Inventory No. 214; RCAMWM 1925. An inventory of the ancient monuments in Wales and Monmouthshire, VII, County of Pembroke, London: HMSO, No. 19.



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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