Satellite Imagery
Satellite Imagery
HER: The West of Scotland Archaeology Service 2482 (None)
NMR: NR 39 SE 12 (37885)
SM: 5971
NGR: NR 3777 9152
X: 137770 Y: 691520 (OSGB36)
This fort occupies a strong position with precipitous rock faces on the S and W and measures about 54m from ENE to WSW by 25m transversely (0.13ha) within a single stone wall. At the more accessible ENE end, to either side of the entrance, the wall is up to 6m in thickness, with an outer face of large blocks standing 1.25m high in four courses, but elsewhere around the margin of the summit it is no more than 2.5m thick. The entrance has evidently been modified, and an original plan in which it was 1.8m in width at the outer end, with checks 1.8m from the outer face, has been reduced to a width of 1.4m, with a new check 2.9m from the outer face. This reconstruction possibly accounts for the medial wall face visible in the thickness of the wall to the SE of the entrance, though equally this may belong to some internal structure of the wall, to which end on the NW the outer face is founded on a built platform. The footings of two later enclosures and a length of wall can be seen within the interior.
Citizen Science: ✗
Reliability of Data: Confirmed
Reliability of Interpretation: Confirmed
X: -691559 Y: 7567291 (EPSG: 3857)
Longitude: -6.212376624900859 Latitude: 56.044557844169226 (EPSG:4326)
Country: Scotland
Current County or Unitary Authority: Argyll & Bute
Historic County: Argyll
Current Parish/Community/Council/Townland: Colonsay And Oronsay
None
| Extant | ✓ |
| Cropmark | ✗ |
| Likely Destroyed | ✗ |
None
| Woodland | ✗ |
| Commercial Forestry Plantation | ✗ |
| Parkland | ✗ |
| Pasture (Grazing) | ✓ |
| Arable | ✗ |
| Scrub/Bracken | ✗ |
| Bare Outcrop | ✗ |
| Heather/Moorland | ✓ |
| Heath | ✗ |
| Built-up | ✗ |
| Coastal Grassland | ✗ |
| Other | ✗ |
None
| Contour Fort | ✓ |
| Partial Contour Fort | ✗ |
| Promontory Fort | ✗ |
| Hillslope Fort | ✗ |
| Level Terrain Fort | ✗ |
| Marsh Fort | ✗ |
| Multiple Enclosure Fort | ✗ |
| Hilltop | ✓ |
| Coastal Promontory | ✗ |
| Inland Promontory | ✗ |
| Valley Bottom | ✗ |
| Knoll/Hillock/Outcrop | ✗ |
| Ridge | ✗ |
| Cliff/Plateau-edge/Scarp | ✗ |
| Hillslope | ✗ |
| Lowland | ✗ |
| Spur | ✗ |
Dominant Topographic Feature: None
| North | ✗ |
| Northeast | ✗ |
| East | ✗ |
| Southeast | ✗ |
| South | ✗ |
| Southwest | ✗ |
| West | ✗ |
| Northwest | ✗ |
| Level | ✓ |
Altitude: 67.0m
N/A
In the absence of excavation, there are neither stratified artefacts nor radiocarbon dates to provide a chronology for the defences.
Reliability: D - None
| Pre 1200BC | ✗ |
| 1200BC - 800BC | ✗ |
| 800BC - 400BC | ✗ |
| 400BC - AD50 | ✗ |
| AD50 - AD400 | ✗ |
| AD400 - AD 800 | ✗ |
| Post AD800 | ✗ |
| Unknown | ✓ |
| Pre Hillfort: | None |
| Post Hillfort: | Two later enclosures within the interior |
Named with a cross on the 1st edition OS 6-inch map (Argyll and Bute 1881, sheet 155), the fort was visited by Stuart and Margaret Piggott in 1944 (Piggott and Piggott 1946, 90-2, fig 5), and was surveyed by the OS at 1:2500 in 1974. It was surveyed by RCAHMS in 1976 for the County Inventory of Argyll (RCAHMS 1984, 89, no.147). It was Scheduled in 1994. It was photographed from the air by RCAHMS in 1979.
| 1st Identified Map Depiction (1878): | Named in Gothic type on the 1st edition OS 6-inch map (Argyll and Bute 1881, sheet 155) |
| Earthwork Survey (1944): | Stuart and Margaret Piggott (Piggott and Piggott 1946, 90-2, fig 5) |
| Other (1974): | Surveyed at 1:2500 by the OS |
| Earthwork Survey (1976): | Plan and description (RCAHMS 1984, 89, no.147; RCAHMS DC144-6) |
| Other (1994): | Scheduled |
Featureless apart from two later enclosures and a length of wall
None
| None | ✓ |
| Spring | ✗ |
| Stream | ✗ |
| Pool | ✗ |
| Flush | ✗ |
| Well | ✗ |
| Other | ✗ |
Two later enclosures
| No Known Features | ✗ |
| Round Stone Structures | ✗ |
| Rectangular Stone Structures | ✗ |
| Curvilinear Platforms | ✗ |
| Other Roundhouse Evidence | ✗ |
| Pits | ✗ |
| Quarry Hollows | ✗ |
| Other | ✓ |
None
| No Known Excavation | ✓ |
| Pits | ✗ |
| Postholes | ✗ |
| Roundhouses | ✗ |
| Rectangular Structures | ✗ |
| Roads/Tracks | ✗ |
| Quarry Hollows | ✗ |
| Other | ✗ |
| Nothing Found | ✗ |
None
| No Known Geophysics | ✓ |
| Pits | ✗ |
| Roundhouses | ✗ |
| Rectangular Structures | ✗ |
| Roads/Tracks | ✗ |
| Quarry Hollows | ✗ |
| Other | ✗ |
| Nothing Found | ✗ |
None
| No Known Finds | ✓ |
| Pottery | ✗ |
| Metal | ✗ |
| Metalworking | ✗ |
| Human Bones | ✗ |
| Animal Bones | ✗ |
| Lithics | ✗ |
| Environmental | ✗ |
| Other | ✗ |
Two later enclosures
| APs Not Checked | ✗ |
| None | ✗ |
| Roundhouses | ✗ |
| Rectangular Structures | ✗ |
| Pits | ✗ |
| Postholes | ✗ |
| Roads/Tracks | ✗ |
| Other | ✓ |
See main summary
| 1: | None |
| 2: | None |
Guard Chambers: ✗
Chevaux de Frise: ✗
| 1. Passage-way/Corridor (North east): | Checked passage |
Single wall
| Area 1: | 0.13ha. |
| Total: | 0.13ha. |
Total Footprint Area: 0.19ha.
None
| ✓ | Multiperiod construction of the entrance |
| ✓ | None |
| NE Quadrant: | 1 |
| SE Quadrant: | 1 |
| SW Quadrant: | 1 |
| NW Quadrant: | 1 |
| Total: | 1 |
| Partial Univallate | ✗ |
| Univallate | ✓ |
| Partial Bivallate | ✗ |
| Bivallate | ✗ |
| Partial Multivallate | ✗ |
| Multivallate | ✗ |
| Unknown | ✗ |
| Partial Univallate | ✗ |
| Univallate | ✗ |
| Partial Bivallate | ✗ |
| Bivallate | ✗ |
| Partial Multivallate | ✗ |
| Multivallate | ✗ |
None
| None | ✗ |
| Earthen Bank | ✗ |
| Stone Wall | ✓ |
| Rubble | ✗ |
| Wall-walk | ✗ |
| Evidence of Timber | ✗ |
| Vitrification | ✗ |
| Other Burning | ✗ |
| Palisade | ✗ |
| Counter Scarp Bank | ✗ |
| Berm | ✗ |
| Unfinished | ✗ |
| Other | ✗ |
None
| None | ✗ |
| Earthen Bank | ✗ |
| Stone Wall | ✗ |
| Murus Duplex | ✗ |
| Timber-framed | ✗ |
| Timber-laced | ✗ |
| Vitrification | ✗ |
| Other Burning | ✗ |
| Palisade | ✗ |
| Counter Scarp Bank | ✗ |
| Berm | ✗ |
| Unfinished | ✗ |
| No Known Excavation | ✓ |
| Other | ✗ |
| ✗ | None |
| ✗ | None |
Number of Ditches: None
| ✗ | None |
Feachem, R (1963) A guide to prehistoric Scotland. Batsford: London (p 115)
Piggott and Piggott, S and C M (1946) 'Field work on Colonsay and Islay, 1944-45'. Proc Soc Antiq Scot 80 (1945-6), 83-103
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
Atlas of Hillforts:
Wikidata:
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
Document Version 1.1