The description is modest, the stone itself unassuming, measuring just over four metres in length and roughly half a metre across, but the designation, if it holds, places it among a quietly significant category of outdoor sites used for Catholic worship during the Penal era, when public celebration of the Mass was suppressed under a series of laws imposed on Ireland from the late seventeenth century onward. Priests and congregations gathered at remote stones, hillsides, and field boundaries, and while many such sites have acquired a firm documentary record over the centuries, others survive only as local memory, passed down without written corroboration.

The stone lies to the south-west of two boulder burials, a type of Bronze Age monument in which a large capstone is set directly on the ground or on small supporting stones, typically covering a burial deposit. Whether the proximity of those older monuments had any bearing on how later communities understood or used this particular spot is unknown, but it is not unusual to find that places already marked by ancient stonework were drawn back into use, or into story, across very different periods. The mass rock identification here rests on local tradition communicated by Dr W. O'Brien, rather than on physical features that distinguish it unambiguously from any other recumbent stone. That uncertainty is itself part of what makes the site worth noting: much of the material evidence for Penal-era worship was never meant to be permanent or conspicuous, and the boundary between a functioning mass rock and a stone that was simply remembered as one can be difficult to locate.