Atlas of Hillforts of Britain and Ireland

SC2727 An Dun, Gairloch, Ross-shire

Satellite Imagery

Satellite Imagery

HER:  Highland HER MHG7730 (None)

NMR:  NG 87 NW 6 (11959)

SM:  6234

NGR:  NG 8027 7534

X:  180270  Y:  875340  (OSGB36)

Summary

The defences of the small fortification on a rocky promontory extending N from the headland at the southern end of the bay at Gairloch comprises two elements: a small oval enclosure on the summit of the promontory; and a dug-out gully cutting off the landward approach from the SE. The inner enclosure measures about 17m from N to S by 15m transversely within the grass-grown remains of a wall about 0.6m high, within which vitrifaction has been observed on the N and adjacent to the entrance on the SE. The entrance opens onto a causeway across the gully, the bottom of which has been dug out to form a ditch some 3m wide by up to 2m deep. It is unclear whether the ditch is merely an outwork to the inner enclosure, or whether it is part of an earlier promontory work. Girt with cliffs along its sides and separated from the outer end of the promontory by a deep natural fissure, it is well-suited to defence and an area of about 0.09ha is cut off behind the ditch. Keith Blood of the OS also identified traces of a bank along the cliff-edge on the landward side of the ditch, possibly indicating an outer defence or an outer enclosure as was depicted by William Thomson in 1924 (1924, 135-9, fig 4); Thomson also believed that the outer end of the promontory beyond the natural fissure was enclosed with walls and marks several places where he identified vitrified stones. This part of the promontory extends to about 0.3ha, much of it apparently bare outcrop.

Status

Citizen Science:  

Reliability of Data:  Confirmed

Reliability of Interpretation:  Confirmed

Location

X:  -633486  Y:  7907483  (EPSG: 3857)

Longitude:  -5.690705631922271  Latitude:  57.71403012023052  (EPSG:4326)

Country:  Scotland

Current County or Unitary Authority:  Highland

Historic County:  Ross-shire

Current Parish/Community/Council/Townland:  Gairloch

Monument Condition

None

Condition:
Extant  
Cropmark  
Likely Destroyed  

Land Use

None

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

None

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:  None

Aspect:
North  
Northeast  
East  
Southeast  
South  
Southwest  
West  
Northwest  
Level  

Altitude:  10.0m

Boundary

N/A


Dating Evidence

In the absence of excavation, there are neither stratified artefacts nor radiocarbon dates to provide a chronology for the defences.

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:   Possibly a dun overlying an earlier promontory work

Evidence:No related records

Investigation History

Also photographed by RCAHMS in 2011

Investigations:
1st Identified Map Depiction (1875):   Annotated 'Dun (Supposed Pictish Fort' on the 1st edition of the OS 25-inch map (Ross-shire 1881, sheet 56.4)
Other (1886):   Mentioned as a vitrified fort (Dixon 1886, 21, 24, 98)
Other (1924):   Sketch-plan and description by William Thomson (1924, 135-9, fig 4)
Other (1947):   A Mr C Gordon sends pieces of vitrified stone to RCAHMS (Graham 1947)
Other (1949):   Description and photographs (Graham 1949, 23-4)
Other (1965):   Surveyed at 1:2500 by the OS
Other (1995):   Scheduled
Earthwork Survey (1996):   Sketch-plan and notes in Highland HER

Interior Features

Featureless unless the dun overlies the promontory work

Water Source

None

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

The dun on the summit

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

Entrances

See main summary

Total Number of Breaks Through Ramparts:  
1:   Incomplete and heavily degraded

Number of Possible Original Entrances:  
2:   None

Guard Chambers:  

Chevaux de Frise:  

Entrances:
1. Other Forms (South east):   Causeway across the ditch

Enclosing Works

Ditch cuts off a promontory, but there is also a possible outer enclosure bounded by a bank extending along the cliff-edge.

Enclosed Area:
Area 1:   0.09ha.
Total:   0.09ha.

Total Footprint Area:  0.1ha.

Ramparts

None

Multi-period Enclosure System:
✗   None

Ramparts Form a Continuous Circuit:
✗   This does not include the dun wall

Number of Ramparts:  
NE Quadrant:   0
SE Quadrant:   1
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

Dun wall contains vitrifaction. Thomson claims traces of vitrifaction on the outer end of the promontory, but this remains unconfirmed

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:
✓   Cutting off promontory

Number of Ditches:  1

Annex:
✗   None

References

Dixon, J H (1886) Gairloch in north west Ross-shire: its records, traditions inhabitants and natural history with a guide to Gairloch and Loch Maree. Edinburgh

Feachem, R (1963) A guide to prehistoric Scotland. Batsford, London (p 149)

Graham, A (1947) 'New vitrified forts'. Proc Soc Antiq Scot.81 (1946-7), 182

Graham, A (1951) 'Notes on some brochs and forts visited in 1949'. Proc Soc Antiq Scot 83 (1948-9), 12-24

Thomson, W (1924) 'An Account of several Antiquities in Gairloch Parish, Ross-shire'. Proc Soc Antiq Scot 58 (1923-4), 131-9



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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