Atlas of Hillforts of Britain and Ireland

SC2688 Canna, Dun Channa, Inverness-shire

Satellite Imagery

Satellite Imagery

HER:  Highland HER MHG5629 (None)

NMR:  NG 20 SW 1 (10764)

SM:  5954

NGR:  NG 2058 0478

X:  120580  Y:  804780  (OSGB36)

Summary

This small fortification occupies the summit of an isolated stack, which is linked to the western tip of Canna at the foot of the coastal cliffs by a narrow spine of outcrop. Indeed, the access on the NE to the entrance is only gained by scaling a vertical face some 3m high, though this may be achieved relatively easily via ledges above a precipitous drop down to the shore below. Apart from these natural features, the defences comprise a single wall drawn along the landward face of the stack on the NE, which still presents an outer face standing 2.4m high in fourteen courses immediately to the NW of the centrally placed entrance. Here the wall attains a maximum thickness of 1.7m and is set back from the edge of the stack to leave a steeply sloping approach to the mouth of the passageway; the latter is 1.3m wide at its inner end, where the faces to either side still stand 0.8m high. The interior measures 35m from NW to SE by 30m transversely (0.1ha). The only features visible within the interior are two rectangular buildings. These are set to either side of the entrance, that on the NW measuring 11.3m by 6.6m overall, and the other 6.5m by 5.5m overall. Clothed in deep tussocky grass, they obscure the line of the inner face of the main wall and are likely to post-date it.

Status

Citizen Science:  

Reliability of Data:  Confirmed

Reliability of Interpretation:  Confirmed

Location

X:  -735749  Y:  7770176  (EPSG: 3857)

Longitude:  -6.609345641603124  Latitude:  57.04917165183408  (EPSG:4326)

Country:  Scotland

Current County or Unitary Authority:  Highland

Historic County:  Inverness-shire

Current Parish/Community/Council/Townland:  Small Isles

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:   There are two rectangular buildings within the interior

Evidence:No related records

Investigation History

Named on the 1st edition of the OS 6-inch map (Argyllshire, Islands of Canna & Sanday 1881, sheet 59), but not identified as an antiquity.

Investigations:
1st Identified Written Reference (1925):   Description (RCAHMS 1928, 218, no.681)
1st Identified Map Depiction (1972):   Visited by the OS
Other (1994):   Description by RCAHMS
Other (1994):   Scheduled

Interior Features

Contains two rectangular buildings lying either side of the entrance

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 (North east):   None

Enclosing Works

Single wall defending the landward side

Enclosed Area:
Area 1:   0.1ha.
Total:   0.1ha.

Total Footprint Area:  Noneha.

Ramparts

None

Multi-period Enclosure System:
✗   None

Ramparts Form a Continuous Circuit:
✗   None

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

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

Feachem, R (1963) A guide to prehistoric Scotland. Batsford: London (p 180)

RCAHMS (1928) The Royal Commission on the Ancient and Historical Monuments and Constructions of Scotland. Ninth report with inventory of monuments and constructions in the Outer Hebrides, Skye and the Small Isles. 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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