What marks it out is a circular hollow worn or carved into the upper face, roughly 38 centimetres across and 16 centimetres deep, with a narrow channel running from one edge of the stone down into the depression like a gutter leading to a basin. The full extent of the block remains unknown, since most of it is buried, but the exposed surface measures around 0.8 metres at its widest point.

The stone sits on level ground about 30 metres north of a graveyard that encloses an old church at Churchpark, and the modest mound in which it rests, oval in plan and barely 35 centimetres high, suggests it may have been set deliberately apart from the burial ground rather than simply left where it lay. By 1916, when the Ordnance Survey recorded the area at six-inch scale, it was already being called St. Patrick's Font, a name that places it within a widespread Irish tradition of associating natural or worked stone hollows with early Christian figures. Such features were often understood as holy wells in a different form, points where water gathered in a depression was believed to carry curative properties. At Churchpark, local tradition held that water collecting in the central hollow could cure warts, a specific and remarkably persistent belief that attaches itself to a surprising number of similar stones and wells across the country.