Atlas of Hillforts of Britain and Ireland

SC2169 Islay, Dun Nan Gall, Argyll

Satellite Imagery

Satellite Imagery

HER:  The West of Scotland Archaeology Service 2628 (None)

NMR:  NR 45 NE 1 (38034)

SM:  5649

NGR:  NR 4681 5582

X:  146810  Y:  655820  (OSGB36)

Summary

This small fortification occupies a coastal promontory, which is cut off on the SW by no less than three walls, the inner of which displays an exposure of vitrifaction. The cliff girt interior to the rear of this wall measures about 35m from NE to SW by a maximum of 17m transversely, the wall itself, however has been reduced to no more than a mound of rubble up to 1.6m high. The middle wall is no more than a short length 2m thick, the faces reduced to their basal courses but with the core standing 1m high, while the outer is about 2.5m thick by 1.2m high, with the lines of its faces preserved almost complete. The latter spans the whole neck of the promontory and is broken by an entrance towards its NW end. The interior is featureless. The different states of preservation of the three walls suggests that they may not all be contemporary.

Status

Citizen Science:  ✗

Reliability of Data:  Confirmed

Reliability of Interpretation:  Confirmed

Location

X:  -671730  Y:  7504746  (EPSG: 3857)

Longitude:  -6.034249442871055  Latitude:  55.72945831716352  (EPSG:4326)

Country:  Scotland

Current County or Unitary Authority:  Argyll & Bute

Historic County:  Argyll

Current Parish/Community/Council/Townland:  Kildalton And Oa

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:  14.0m

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:   None

Evidence:No related records

Investigation History

First depicted on the 1st edition OS 25-inch map (Argyll and Bute 1881, sheet 221.1), it was visited in 1934 by Gordon Childe (Childe 1935, 81) and subsequently by the Islay Survey Group (Celoria 1959, N.7/9; Lamont 1959). In 1976 RCAHMS surveyed the fort for the County Inventory of Argyll (RCAHMS 1984, 93-4, no.156) and in 1979 it was visited by the OS. It was photographed from the air by RCAHMS in 1979, and Scheduled in 1993.

Investigations:
1st Identified Map Depiction (1878):   Named in Gothic type on the 1st edition OS 25-inch map (Argyll and Bute 1881, sheet 221.1)
Other (1934):   Description by Gordon Childe (Childe 1935, 81)
Other (1959):   Description by the Islay Survey Group (Celoria 1959, N.7/9; Lamont 1959)
Earthwork Survey (1976):   Plan and description (RCAHMS 1984, 93-4, no.156; RCAHMS DC161-2)
Other (1979):   Surveyed at 1:10.000 by the OS
Other (1993):   Scheduled

Interior Features

Featureless

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

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:   None

Number of Possible Original Entrances:  
2:   None

Guard Chambers:  ✗

Chevaux de Frise:  ✗

Entrances:
1. Simple Gap (South west):   in the outermost wall

Enclosing Works

Three walls cutting across a promontory

Enclosed Area:
Area 1:   0.07ha.
Total:   0.07ha.

Total Footprint Area:  0.12ha.

Ramparts

None

Multi-period Enclosure System:
✗   None

Ramparts Form a Continuous Circuit:
✗   None

Number of Ramparts:  
NE Quadrant:   0
SE Quadrant:   0
SW Quadrant:   3
NW Quadrant:   0
Total:   3

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

Celoria, F (1959) Preliminary handbook to Islay, 7/9

Childe, V G (1935) 'Notes on some duns in Islay'. Proc Soc Antiq Scot 69 (1934-5), 81-4

Lamont, W (1959) 'From the Islay Archaeological Survey Group', Discovery Excav Scot 1959, 12

RCAHMS (1984) The Royal Commission on the Ancient and Historical Monuments of Scotland. Argyll: an inventory of the monuments volume 5: Islay, Jura, Colonsay and Oronsay. 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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