HER:  The West of Scotland Archaeology Service 373 (None)
NMR:  NM 34 NE 1 (21785)
SM:  None
NGR:  NM 3586 4959
X:  135860  Y:  749590  (OSGB36)
This fort cuts off a precipitous promontory at the foot of the NW face of Creag a' Chaisteil on the S shore of Calgary bay. The approaches from the S and E along the terrace taken by the public road are cut off by a single wall forming a band of rubble about 3m thick and 0.6m high, but excavation in 1964 showed that it is 2.1m to 2.4m in thickness. The interior measures about 73m from N to S by 36m transversely (0.18ha), and there are entrances on the SSW and SSE, both of which were also excavated. That on the SSE was paved and had the door at the inner end of the passage, whereas that on the SSW had been inserted, and reduced in width from 3m to 1.3m in a secondary phase (Betts 1964). The terrace outside the defences and the interior have both been cultivated during the post-medieval period, but the excavations located an oval structure with an earthen floor and timber posts immediately within the SSE entrance.
Citizen Science:  ✗
Reliability of Data:  Confirmed
Reliability of Interpretation:  Confirmed
X:  -701437  Y:  7671478  (EPSG: 3857)
Longitude:  -6.301115068902043  Latitude:  56.56378330423133  (EPSG:4326)
Country:  Scotland
Current County or Unitary Authority:  Argyll & Bute
Historic County:  Argyll
Current Parish/Community/Council/Townland:  Kilninian And Kilmore
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:  20.0m
N/A
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:   | Cultivated in the post-medieval period |
None
| 1st Identified Written Reference (1959):   | Discovery (Betts 1959); also visited by RCAHMS (MS 36/183) |
| Earthwork Survey (1959):   | Plan (RCAHMS AGD 619/1-3) |
| Excavation (1964):   | By the Mull Field Club (Betts 1964; RCAHMS AGD 619/3-4; photographic archive is also in RCAHMS collection) |
| 1st Identified Map Depiction (1972):   | Surveyed at 1:10,000 by the OS |
| Earthwork Survey (1978):   | Plan and description (RCAHMS 1980, 74, no.128, fig 54) |
Cultivated over with rigs, but oval structure located by excavation
None
| None   | ✓ |
| Spring   | ✗ |
| Stream   | ✗ |
| Pool   | ✗ |
| Flush   | ✗ |
| Well   | ✗ |
| Other   | ✗ |
None
| 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   | ✗ |
NO APPARENT FEATURES
| APs Not Checked   | ✗ |
| None   | ✓ |
| Roundhouses   | ✗ |
| Rectangular Structures   | ✗ |
| Pits   | ✗ |
| Postholes   | ✗ |
| Roads/Tracks   | ✗ |
| Other   | ✗ |
See main summary
| 2:   | None |
| 2:   | None |
Guard Chambers:  ✗
Chevaux de Frise:  ✗
| 1. Simple Gap (South east):   | None |
| 2. Simple Gap (South west):   | Secondary and subsequently reduced in width |
Single wall cutting off a promontory
| Area 1:   | 0.18ha. |
| Total:   | 0.18ha. |
Total Footprint Area:  Noneha.
None
| ✗   | None |
| ✗   | None |
| NE Quadrant:   | 0 |
| SE Quadrant:   | 1 |
| SW Quadrant:   | 1 |
| NW Quadrant:   | 0 |
| 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 |
Betts, U V G (1959) 'Creag a' Chaisteil'. Disc Exc Scot 1959, 10
Betts, U V G (1964) 'Creag a' Casteil, Calgary, Isle of Mull'. Disc Exc Scot 1964, 18
RCAHMS (1980) The Royal Commission on the Ancient and Historical Monuments of Scotland. Argyll: an inventory of the monuments volume 3: Mull, Tiree, Coll and Northern Argyll (excluding the early medieval and later monuments of Iona). 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