Ancient Monuments

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Loch an Duin,dun and causeways,Scalpay

A Scheduled Monument in Na Hearadh agus Ceann a Deas nan Loch, Na h-Eileanan Siar

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Latitude: 57.8726 / 57°52'21"N

Longitude: -6.6827 / 6°40'57"W

OS Eastings: 122451

OS Northings: 896626

OS Grid: NG224966

Mapcode National: GBR 97WX.HV2

Mapcode Global: WGX3F.BD05

Entry Name: Loch an Duin,dun and causeways,Scalpay

Scheduled Date: 21 August 1995

Source: Historic Environment Scotland

Source ID: SM6216

Schedule Class: Cultural

Category: Prehistoric domestic and defensive: dun

Location: Harris

County: Na h-Eileanan Siar

Electoral Ward: Na Hearadh agus Ceann a Deas nan Loch

Traditional County: Inverness-shire


The monument consists of the remains of a dun, a fortified island dwelling of Iron Age or medieval date, togther with the remains of two causeways which formerly linked it to the shore and to another small island.

The island on which the dun stood has been artificially enlarged by the addition of rubble at several points around the water's edge. The dun measures 28.0m E-W by 27.4m overall, and has walls up to 1.7m thick. The interior is heavily overgrown. On the W side of the dun a stretch of boulder-built causeway appears above the water level, and the rest appears to survive, below water level, linking the island with the nearby shore. A second causeway, almost completely submerged and in poor condition, runs N from the dun to a small island nearby. There are no obvious traces of structures on this second island.

The area to be scheduled is irregular on plan, measuring some 125m E- W by a maximum of 60m N-S, to include the two islands and causeways, and an area of the floor of the loch around them, on and in which evidence relating to the construction and use of the dun and causeways may survive, as marked in red on the accompanying map.

Source: Historic Environment Scotland

Statement of Scheduling

The monument is of national importance as a late prehistoric or medieval fortified dwelling on an artificially enhanced island with associated causeways. It has the potential, through excavation of the surviving remains both above and below the water, to provide important information about contemporary domestic and defensive architecture and material culture, with particular significance for our understanding of the reasons behind the protracted use of such island sites in the Western Isles.

Source: Historic Environment Scotland



RCAHMS records the monument as NG 29 NW 2.

Source: Historic Environment Scotland is an independent online resource and is not associated with any government department. All government data published here is used under licence. Please do not contact for any queries related to any individual ancient or schedued monument, planning permission related to scheduled monuments or the scheduling process itself. is a Good Stuff website.