It is barely half a metre high at its tallest point, and measures around eleven metres north to south and seven metres east to west. What makes it worth pausing over is its shape: where most cairns, which are ancient mounds of heaped stone often raised over burials or used as landmarks, tend toward the circular, this one appears to have been D-shaped, a less common form that hints at something deliberate in its original construction.

The structure only came to attention relatively recently, identified during fieldwork carried out as part of the AranLIFE Farming Project, which ran between 2014 and 2018 and was focused on the traditional farming landscapes of the Aran Islands. By the time it was recorded, the cairn had already been substantially robbed out, meaning that stones were removed over time, likely for use in the field walls and enclosures that pattern this limestone landscape so densely. A number of set stones remain visible along the eastern side, suggesting something of the cairn's original structure survives beneath the surface disturbance. Whether it was ever a burial monument, a boundary marker, or served some other purpose is not yet established.