A small, rough-hewn granite cross stands near the more celebrated South Cross at Castledermot, County Kildare, easy to overlook precisely because it makes no great show of itself. Where the high crosses of early medieval Ireland are typically elaborate, carved with scriptural scenes and interlacing ornament, this one is plain granite, barely shaped, measuring just 66 centimetres tall and 34 centimetres wide. Its modesty is itself a kind of puzzle.

The cross is a Latin cross in form, meaning it has one arm longer than the other three, the shape most familiar from Christian iconography. Beyond that, the record is spare. It sits in proximity to the South Cross at Castledermot, a site with deep early Christian associations. Castledermot, known in Irish as Diseart Diarmada, the hermitage of Diarmait, was an important monastic centre from at least the ninth century, and the site preserves several carved high crosses along with a Romanesque doorway and a round tower. This small, rough granite piece is catalogued alongside those grander monuments, though it carries none of their decorative ambition. Whether it was a grave marker, a boundary indicator, or simply an ancillary devotional object is not recorded.