It is not a dramatic find in the conventional sense, no inscription, no sculpture, no obvious ornament, yet it quietly preserves a small piece of architectural intention that is otherwise gone.

The fragment is a curving chamfered block, meaning its edge has been cut away at an angle rather than left square, a finishing technique commonly used on medieval doorways, windows, and arches to soften a corner and give the stonework a more refined profile. The block measures just over 82 centimetres at its longest and 24 centimetres in both width and thickness. Its face was lightly hammer dressed, worked with a tool to produce a slightly textured, even surface, while the inward edge is smooth and the base is neatly squared off. The top is irregular, damaged at some point in the past. The curve of the stone and the position of its chamfer suggest it formed part of the upper right-hand side of a doorway, most likely one belonging to, or at least associated with, Cloonacauneen Castle nearby. Whether it came from the castle directly or from an outbuilding connected to it is not certain, but it has the proportions and finish of dressed castle stonework rather than anything more vernacular.