The slab, roughly a metre tall and half a metre wide, is cracked across its middle and carries no inscription, yet its carved surface is dense with meaning: a four-armed cross with trefoil terminals, a crown of thorns, a barred knop, and flanking celestial symbols, the sun on the right side and the moon on the left. Below the cross, a series of objects known as the Instruments of the Passion are laid out in stone: a hammer, pincers, a ladder, a cup, and a lance, each one associated by medieval tradition with the events of the crucifixion. It is an unusually complete rendering of a devotional vocabulary that was once widespread on Irish graveslabs but is now rarely encountered so intact.

The slab was originally associated with the medieval church of St Nicholas of Myra, which stood on this site until around 1813, when it was demolished and replaced by a Church of Ireland building. The new church absorbed what it could of the old fabric, and this fragment ended up set into the western boundary wall rather than lost to rubble or reuse elsewhere. The medieval dedication to St Nicholas of Myra, the fourth-century bishop whose cult spread across Europe during the Middle Ages, points to a church of some age and significance, though the exact date of the slab's carving is not recorded. What survives is less a gravestone in the familiar sense and more a panel of compressed theological imagery, the kind of object that once told a congregation something about death, salvation, and the instruments of suffering without needing a single word.