It rises close to Castlequin House, tapering gently as it climbs, with a pear-shaped base measuring roughly 1.22 metres by 0.64 metres, aligned on a northwest to southeast axis. From where it stands, the ground opens southward toward the Ferta river, and it is difficult not to wonder whether that orientation, toward water, was entirely accidental.

Standing stones of this kind are among the most enigmatic survivals of prehistoric Ireland. Erected most commonly during the Bronze Age, though some may be earlier or later, they resist easy interpretation. They have been read variously as territorial markers, burial indicators, astronomical alignments, and ceremonial waypoints, and the honest answer is that no single explanation fits them all. What makes the Castlequin example quietly compelling is its scale and its setting. At over three metres, it is a substantial monument, not a roadside curiosity but a deliberate, labour-intensive statement in the landscape. The choice of a position overlooking a river valley suggests it was meant to be seen, or perhaps to see from.