The structure measures approximately 13 metres across its north-west to south-east axis and around 11 metres on the other, defined by a contiguous ring of up to 24 stones, each between 1.5 and 1.8 metres in length. Nobody is entirely certain what it is. When it was added to the Record of Monuments and Places in 1986, officials catalogued it under the cautious heading of "hut sites, possible", which is the archaeological equivalent of a polite shrug.

The researcher Leask, writing in undated topographical files held by the National Museum of Ireland and the Office of Public Works, described it as a cairn circle, a term that places it somewhere in the broad family of prehistoric stone monuments, though without committing to a specific function or period. A cairn circle typically refers to a ring of stones set around or over a burial mound, but the unclassified status here reflects genuine uncertainty rather than simple neglect. What adds further interest is the company the structure keeps: a second unclassified cairn lies only 12 metres to the south, and a third sits roughly 140 metres to the north-north-east. Three anomalous stone features clustered on the same hillside, overlooking a steeper drop to the west with open views across the landscape, suggest this was not an accidental or isolated choice of location, whatever the original purpose may have been.