Scheduled Monument

An Caisteal, dunSM10622

Status: Designated

Documents

Where documents include maps, the use of this data is subject to terms and conditions (https://portal.historicenvironment.scot/termsandconditions).

The legal document available for download below constitutes the formal designation of the monument under the Ancient Monuments and Archaeological Areas Act 1979. The additional details provided on this page are provided for information purposes only and do not form part of the designation. Historic Environment Scotland accepts no liability for any loss or damages arising from reliance on any inaccuracies within this additional information.

Summary

Date Added
29/10/2003
Type
Prehistoric domestic and defensive: dun
Local Authority
Argyll And Bute
Parish
Kilfinichen And Kilvickeon
NGR
NM 38742 21418
Coordinates
138742, 721418

Description

The monument comprises a dun, visible as upstanding remains. Duns are fortified settlement sites of Iron Age date (around 500 BC to AD 500).

The monument occupies a conspicuous position on the summit of a rocky crag, about 550m SE of Bunessan and at about 60m OD. On the N flank the ground falls away steeply, but on the S, where there is a saddle affording relatively easy access, the dun is overlooked by higher ground.

Partial excavation was carried out in 1960, during which the entrance and the SW part of the interior were examined, and a section was cut through the dun wall on the S.

The dun is irregular on plan and measures approximately 8.2m E-W by not more than 8.8m transversely, within a drystone wall of varying thickness, from about 4m on the S to 6.1m by the entrance. No inner facing-stones were discovered in situ during the excavation, probably because of stone-robbing. Within the body of the wall, an outward-facing revetment was traced intermittently around most of the S half of the perimeter.

Similar features have been noted in other duns on Mull and at fortified sites elsewhere in Argyll. In this case, however, the revetment is exceptionally well built for an intramural feature, and it is possible that this is in fact the original outer face of the dun wall, to which an outer skin was added at some later date, perhaps to preserve its stability.

An unusual entrance is situated on the W side. The entrance passage narrows from 1.6m wide on the outer face to only 0.6m wide at its inner end. The outermost 1.3m length of the N passage-wall is stepped back, making the passage roughly L-shaped on plan. This expansion on the outer face would have made the entrance more vulnerable to attack, which suggests that it was not part of the original design, but the result of later alterations.

During excavation an orthostatic stone slab was found blocking the entrance at the point where it increases in width, and a similar slab was discovered lying on the floor of the passage at its mouth. These may have been used to close the passage (instead of the more usual wooden doors), or they may have been displaced from the passage wall. The innermost slab could originally have served as a door-jamb.

Apart from three crude hearths, the excavated portion of the interior contained no significant structures. Among the artefacts recovered were several small sherds of coarse native pottery, the upper stone of a rotary quern, and a small fragment of micaceous schist bearing a cup-shaped depression.

The area proposed for scheduling comprises the remains described and an area around them within which related material is likely to survive. It is sub-rounded in shape, with maximum dimensions of 56m N-S by 62m E-W, as marked in red on the accompanying map.

Statement of National Importance

The monument is of national importance because of its potential to contribute to an understanding of later prehistoric defended settlements and economy. Its importance is increased by its proximity to other monuments of potentially contemporary date.

References

Bibliography

RCAHMS records the monument as NM32SE 2.

References:

Fairhurst H 1964, 'An Caisteal: an Iron Age fortification in Mull', PROC SOC ANTIQ SCOT 95, 199-207.

RCAHMS 1980a, ARGYLL: AN INVENTORY OF THE MONUMENTS VOLUME 3: MULL, TIREE, COLL AND NORTHERN ARGYLL (EXCLUDING THE EARLY MEDIEVAL AND LATER MONUMENTS OF IONA), Edinburgh: HMSO, 95-6, No. 171.

Photographic references:

RCAHMS 1960 A41518PO (H Fairhurst).

About Scheduled Monuments

Historic Environment Scotland is responsible for designating sites and places at the national level. These designations are Scheduled monuments, Listed buildings, Inventory of gardens and designed landscapes and Inventory of historic battlefields.

We make recommendations to the Scottish Government about historic marine protected areas, and the Scottish Ministers decide whether to designate.

Scheduling is the process that identifies, designates and provides statutory protection for monuments and archaeological sites of national importance as set out in the Ancient Monuments and Archaeological Areas Act 1979.

We schedule sites and monuments that are found to be of national importance using the selection guidance published in Designation Policy and Selection Guidance (2019)

Scheduled monument records provide an indication of the national importance of the scheduled monument which has been identified by the description and map. The description and map (see ‘legal documents’ above) showing the scheduled area is the designation of the monument under the Ancient Monuments and Archaeological Areas Act 1979. The statement of national importance and additional information provided are supplementary and provided for general information purposes only. Historic Environment Scotland accepts no liability for any loss or damages arising from reliance on any inaccuracies within the statement of national importance or additional information. These records are not definitive historical or archaeological accounts or a complete description of the monument(s).

The format of scheduled monument records has changed over time. Earlier records will usually be brief. Some information will not have been recorded and the map will not be to current standards. Even if what is described and what is mapped has changed, the monument is still scheduled.

Scheduled monument consent is required to carry out certain work, including repairs, to scheduled monuments. Applications for scheduled monument consent are made to us. We are happy to discuss your proposals with you before you apply and we do not charge for advice or consent. More information about consent and how to apply for it can be found on our website at www.historicenvironment.scot.

Find out more about scheduling and our other designations at www.historicenvironment.scot/advice-and-support. You can contact us on 0131 668 8914 or at designations@hes.scot.

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Printed: 17/08/2026 05:58