This is a bullaun stone, a type of ancient carved or abraded rock feature found across Ireland, typically characterised by one or more rounded depressions ground into the surface. Their precise origins and purposes remain genuinely unclear; they are variously associated with early Christian sites, ritual practice, and the grinding of grain or pigments, and they tend to cluster in places that carry other traces of early activity.

What makes Kelshamore particularly interesting is not just one such stone but three, gathered within a relatively compact rocky area. About 40 metres to the northwest lies a second bullaun, this one with three basins rather than one. Between the two sits something else entirely: the grass-covered foundations of what may have been a convent, a small early religious enclosure of the kind that frequently accompanied bullaun stones in the Irish landscape. A third bullaun stone lies approximately 80 metres to the north. Together, these features suggest a concentration of early ecclesiastical or ritual activity in a spot that, from the outside, might read as unremarkable hillside ground.