The term refers to a type of early grave site, typically medieval or earlier in origin, where the dead were interred without the raised mounds, elaborate markers, or enclosing walls that characterise more familiar graveyards. The ground simply lies level, the burials folded into the landscape with little to announce them. These sites are scattered across Ireland, often associated with early Christian communities, unbaptised children, or populations that, for one reason or another, fell outside the provision of consecrated parish ground.

Beyond its classification and location in Coolmore, the historical detail for this particular site remains sparse. What can be said is that flat cemeteries of this kind tend to cluster around early ecclesiastical settlements or to occupy marginal land at the edges of townlands, places that held a quiet, unofficial sanctity long before the parish system formalised the geography of death in Ireland. Coolmore itself is a small rural townland, and the presence of such a site there hints at a layer of local history that has not yet been fully drawn to the surface.