Scheduled Monument

Seanachaisteal,promontory fortSM5303

Status: Designated


Where documents include maps, the use of this data is subject to terms and conditions (

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.


Date Added
Supplementary Information Updated
Prehistoric domestic and defensive: fort (includes hill fort and promontory fort)
Local Authority
Planning Authority
NC 40571 69415
240571, 969415


The monument consists of a promontory fort on a coastal headland. The promontory fort projects into the sea and is defended on all sides except the S by steep cliffs. To the S the fort is protected by a substantial rampart with a wide external ditch. Possible traces of an internal ditch are also visible. The outer ditch is about 0.7m deep and has an average width of 11m.

The rampart is of stone and earth and measures about 6m across, standing 2m high above the outer ditch. The probable inner ditch is about 8m wide. Inside the area defined by the ramparts is a rocky knoll which shows possible traces of a further line of ramparts. To the N of the summit of the knoll is a horse-shoe-shaped depression which may be the foundations of a prehistoric hut.

The area to be scheduled measures 175m N-S by 75m E-W, to include the promontory fort and possible hut, as shown in red on the attached map.

Statement of National Importance

The site is of national importance for its potential contribution to an understanding of prehistoric defensive architecture and domestic settlement.



RCAHMS records the monument as NC 46 NW 1.

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

Find out more about scheduling and our other designations at You can contact us on 0131 668 8914 or at


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Printed: 03/06/2023 02:18