It is a bullaun stone, a type of rounded or roughly shaped rock bearing one or more deliberately hollowed depressions, and this particular example carries a single central bowl worn into its surface. The stone itself is modest in size, roughly sixty centimetres across and thirty centimetres high, with the bowl measuring about thirty centimetres in diameter and twenty centimetres deep. Bullaun stones are found across Ireland, often near early medieval ecclesiastical sites, and their precise original purpose remains a matter of some debate; theories range from grain-grinding to ritual water collection, and many have accumulated strong folk associations with cursing or healing.

This stone may not have begun its existence as a garden feature. According to local information provided by Mrs C. Besnyoe, it is thought to have originated at an ecclesiastical site in the nearby townland of Kilmeen. How and when it was moved to the grounds of Ballydoogan House is not recorded, but its relocation is not unusual. Bullaun stones were frequently displaced from their original contexts over the centuries, sometimes gathered as curiosities, sometimes simply shifted during land clearance. The Kilmeen connection, if accurate, would place the stone within a landscape that once carried significant religious or ceremonial meaning, even if little of that context remains visible today.