The site sits on what was once bogland within Rockbarton Demesne, in the civil parish of Coshma, and its existence would almost certainly have remained unknown had peat extraction not disturbed the ground beneath it. What the cutters uncovered was not a dramatic ruin or a visible earthwork, but something quieter and stranger: evidence that people had lived and worked here long ago, preserved by the particular chemistry of bogland, which can hold organic and fired material for millennia in conditions that drier soils cannot match.

The discovery was made in 1941 and subsequently documented by F. H. A. Mitchell and Seán P. Ó Ríordáin, whose report appeared in 1942. This was the central of three habitation sites found during the same turf-cutting work, catalogued as Site II in their survey plan. Mitchell and Ó Ríordáin described the feature as covering an area of roughly twelve square metres, focused on what they called a pillow-shaped mass of burnt stones, approximately one hundred centimetres in diameter and twenty-five centimetres thick. Around and within this modest central feature, they recovered fragments of pottery, a flint scraper, and an unidentified fragment of burnt bone. The flint scraper is worth pausing on: flint does not occur naturally in this part of Limerick, so its presence here suggests either trade, travel, or the movement of people carrying tools over considerable distances. Taken together, the finds point to domestic or small-scale activity at some point in prehistory, though the notes do not specify a more precise period.

The site today lies within grassland on the former bogland of Rockbarton Demesne, and there is nothing visible on aerial photography to indicate where it lies. For the visitor, this is a site that rewards background reading more than on-the-ground inspection. There is no surface trace to seek out, no earthwork to walk around. What matters here is the landscape context: standing on former bogland and understanding that the unremarkable field before you once yielded a small burnt-stone feature, a worked flint tool, and a fragment of bone that no one has yet been able to identify with certainty.