Atlas of Hillforts of Britain and Ireland

SC2290 Dun a' Chaisteil, Argyll

Satellite Imagery

Satellite Imagery

HER:  The West of Scotland Archaeology Service 3645 (None)

NMR:  NR 77 NW 7 (39054)

SM:  3645

NGR:  NR 7137 7794

X:  171370  Y:  677940  (OSGB36)

Summary

What are usually considered to be two outworks to the dun crowning the summit of this steep-sided and precipitous ridge overlooking the southern shore of Loch Sween are included here as the defences of a fort, cutting off access from the S. No defences are known at the NE end, though a plinth of masonry beneath the NE flank of the dun is possibly the remains of an earlier wall. The dun itself was initially circular, measuring 17m in diameter within a thick wall, but this was subsequently extended on the SW to form an enclosure measuring some 36m in internal length (0.05ha); at one point on the SW the outer face of the new wall still stands up to 2m in height in fifteen courses. No entrance into the dun is visible, and nor through the outer defences of the possible fort, though there is a large gap along the SE margin of the ridge above a precipitous and rock-strewn slope. Here the two outer walls are 18m apart, but they converge towards the NW, merging at the NW margin of the ridge where a single outer facing-stone on the line of the inner perhaps suggests that the outer is butted on.

Status

Citizen Science:  ✗

Reliability of Data:  Confirmed

Reliability of Interpretation:  Confirmed

Location

X:  -630361  Y:  7546484  (EPSG: 3857)

Longitude:  -5.662628428390976  Latitude:  55.94001580002596  (EPSG:4326)

Country:  Scotland

Current County or Unitary Authority:  Argyll & Bute

Historic County:  Argyll

Current Parish/Community/Council/Townland:  North Knapdale

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:  115.0m

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:   Footings of later pens are visible within the duns

Evidence:No related records

Investigation History

None

Investigations:
1st Identified Map Depiction (1869):   Annotated Fort on 1st edition OS 6-inch map (Argyll and Bute 1873, sheet 179)
Earthwork Survey (1934):   Plan attributed to the Office of Works (RCAHMS AGD 909/1-2)
Other (1942):   Description RCAHMS wartime Emergency Surveys
Other (1959):   Description RCAHMS
Other (1963):   Description sometime 1954-63 (Campbell and Sandeman 1962, 45)
Other (1973):   Surveyed at 1:10.000 by the OS
Other (1977):   Surveyed at 1:10.000 by the OS
Earthwork Survey (1983):   Plan and description (RCAHMS 1988, 182-3, no.295; RCAHMS DC13381-2)

Interior Features

Apart from the two successive duns on the summit the interior is featureless

Water Source

None

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

Surface

Two successive duns

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

See main summary

Total Number of Breaks Through Ramparts:  
1:   one large gap

Number of Possible Original Entrances:  
2:   Entrance is not, however, visible

Guard Chambers:  ✗

Chevaux de Frise:  ✗

Entrances:No related records

Enclosing Works

To the SW of the duns crowning the summit, two walls cut off access from this direction.

Enclosed Area:
Area 1:   0.17ha.
Total:   0.17ha.

Total Footprint Area:  Noneha.

Ramparts

None

Multi-period Enclosure System:
✗   The duns are not included in the vallation

Ramparts Form a Continuous Circuit:
✗   None

Number of Ramparts:  
NE Quadrant:   1
SE Quadrant:   0
SW Quadrant:   2
NW Quadrant:   0
Total:   2

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:  None

Annex:
✗   None

References

Campbell and Sandeman, M and M (1962) 'Mid Argyll: an archaeological survey', Proc Soc Antiq Scot 95 (1961-2), 1-125

RCAHMS (1988) The Royal Commission on the Ancient and Historical Monuments of Scotland. Argyll: an inventory of the monuments volume 6: Mid-Argyll and Cowal, prehistoric and early historic monuments. HMSO: Edinburgh



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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