Ardivachar’s mystery mound

Our Understanding and Recording Coastal Archaeology sessions are now finished, but there was an optional assessment which students could submit; and, of course, I treated it as an integral part of participating. A full .pdf is elsewhere on the blog, but here is a short post both advertising that and providing a blog-length summary of the report (in terms of the word count, this is actually on target whereas the assignment turned out to be twice the required length – funny, that!).

My assignment seeks to bring together what we know about the mound situated at Ardivachar Point (Rubha Àird na Mhachrach) and also includes some basic recommendations about the management of the site in terms not only of the course themes but also with a view to a wider assessment of its value as a community and archaeological resource.

The mound

Nothing is known concretely about the mound: indeed, it has only been ‘known’, in an archaeological context, since 2005 when it was added to the record as a result of the Coastal Zone Assessment Survey carried out subsequent to the violent and tragic storm of that January.

The mound measures c. 9.1m x c. 3.6m and appears to have a rather definite heart, or diamond, shape in terms of how the grass falls at the edges and which may represent the limits of the displacement of ground when the mound was constructed.

Photo 1: the mound’s heart shape

The mound is located on the headland at Ardivachar and is around 11 metres from the edge of the rock platform facing a small reef a short way offshore. The site is not a physically obvious one to an untrained eye but there are a couple of interesting features around the site which add to its potential interest.

Firstly, there is a line of stones set into the grass some 15m to the north-east which may form part of a boundary wall (or which, alternatively, may be part of a structure which is nothing to do with the site – for example, boundary walls which pre-date the sub-division of the land into crofts).

Secondly, there are a number of grassy tussocks located c. 11m to the north-west, visible in Photo 1, which may indicate setting points for the sun around midsummer or which may act as some other orientation markers for the site (or which, alternatively, may be just tussocks of grass). Assuming that both of these are deliberate and part of the site increases its footprint quite sizably from the pure dimensions of the mound itself.

Thirdly, there is the issue of what the mound was used for or what it represents. Without more detailed archaeological examination, this is almost completely unclear although we can suppose that the thin topsoil does indicate that there is unlikely to be great depth to whatever may exist below the ground. However, there is an interesting story told locally about it which adds quite considerably to the tale that the site tells.


Moore and Wilson’s assessment that the mound is not an eroding site – it is still graded yellow on SCAPE’s sites-at-risk register – remains a fair one: there is no evidence that the mound itself is under imminent threat from coastal erosion except in the very long-term. Nevertheless, this is not to say that the site is free from forces of erosion: in particular, there is the issue of excessive amounts of rainfall amidst the rising number of extreme weather events posing an increasing challenge to a site whose features are low in profile.

However, erosion is threatening the additional features mentioned above: the potential boundary wall; and the potential orientation markers. Were either indeed to be part of the story told at the site, their loss is much more imminent and likely to lead to a loss in its archaeological value. These issues are explored in the series of photographs below.

Boundary wall

The following two photographs look at the potential boundary wall which, if true, might have protected the mound and also served the function of setting it apart in some way. Photo 2 shows the length of the visible stones in a line which runs north-east from this angle – about 6.5m in length; Photo 3 shows the scale of erosion (note the fallen stones as well as the slippage of grass). There is, however, no evidence of a similar wall to the west.

Orientation markers

The largest of these is centre-left in Photo 4, with three others stretching beyond it in a small arc extending towards the deeper area of erosion further back in the photo. It may be that it is the wind that has sculpted these markers to look as they do and that there is no actual function. The mound itself is to the centre right of the picture and can be found between the second and the fourth fence posts leading to the right from the strainer. Arrows point, to the left, to the orientation marker; and, upwards right, to the mound.

Photo 3: proximity of markers and mound to eroding coastal edge

In addition to the erosion around the markers, note also the rough drainage run-off and its close proximity to the site. That drainage channel runs broadly north-south and connects with others in the area, suggesting that drainage may have been put in place deliberately to skirt the mound. This, in turn, would indicate a community awareness that there is something of value here which ought not to be damaged.

Towards a meaning

If the grassy tussocks are indeed markers for orientation purposes, the most obvious explanation is that these mark the setting of the sun around midsummer, which unofficial guesstimates suggest is certainly a feasible one.

However, more likely is a story about the mound related to me locally by a crofter who, as a small boy (around seventy years ago), was told that it was a memorial to a woman drowned offshore when looking for shellfish while her husband, posted as lookout on account of riptides, deliberately looked the other way as he had fallen in love with another. He further said that the story had been commemorated in song. The South Uist version of the song A Bhean Eudach (The Jealous Woman) is set in Ardivachar and commemorates the drowning of a woman at sea off the Point while collecting dulse. This appears to be the song being referred to – and, in the Gàidhlig, pretty haunting it is, too. Here, the story departs a little from the tale as related to me in that the woman had been drowned by the actions of a servant girl who had fallen in love with her husband.

Folklore is thus making an interesting contribution here towards interpreting and understanding the site. Perhaps it was folklore that informed, with suitable embellishments, a technicolour warning to a small boy not to go into the sea there; or perhaps folklore, in having the song set at Ardivachar, was borrowing from an existing story inspired either by the mound and/or by a real-life tragedy.

Either way, what looks like the heart shape to the mound provides a thoughtful comment on its inspiration.


It is impossible to be definite about the conclusions since we do not know what the mound is, what it was for or anything about its chronology. This can only be known by some sort of further assessment and the use of low-cost, low-intrusive assessment techniques such as laser scanning, photogrammetry and auguring.

Knowing a little more about the site would spark a consideration of the possibility of a range of well-designed remedial actions which should aim to incorporate the community at the heart of the response.

1. the site needs to be better protected against livestock (the well-observed may have spotted that that is indeed a cowpat in Photo 1!) – though animal grazing is also responsible for keeping the grass low and the shape identifiable.

2. existing drainage systems need to be monitored to ensure that water run-off does not damage the site, or that the ground does not become waterlogged as it is around the area of the rough drainage channel.

3. about the potential orientation markers and boundary wall, they are clearly subject to erosion, chiefly from wind and rain washing out the undersoil on the exposed face, although in stormy weather the sea is also likely to present a direct threat. It would appear that little can be done about either of these other than, in the short-terrm, continued monitoring and recording.

Finally, better publicity of the existence of the mound may bring forward more stories and more accounts as to its origins. Working with Uist Community Archaeology Group would seem to be important first steps. Further research also needs to be done not least to assess the alignment of the site. It is also worth making the point that the loss of a mound which has a strong link to a well-known Gàidhlig folk song would represent real loss and that action, at some level, is both warranted and required.

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