This one, on a south-west-facing slope at Cill Ón Chatha, is modest in its dimensions, roughly rectangular in plan and measuring 0.67 metres by 0.25 metres at its base. It leans slightly to the south, as though leaning into the prevailing Atlantic weather, and from its position it looks out over St. Finnian's Bay.

Standing stones are among the most common and most enigmatic prehistoric monuments in Ireland. Erected singly or in groups, they date most frequently from the Bronze Age, though many remain undated, their original purpose unresolved. They have been interpreted variously as territorial markers, burial monuments, route indicators, and ritual focal points, and in most cases the honest answer is that no one is entirely certain. This example is orientated ENE-WSW, an alignment that may or may not be deliberate in an astronomical sense. What is clear is that whoever placed it chose a slope with a wide view down towards the bay, a position that suggests the placement was considered rather than incidental. The placename Cill Ón Chatha carries ecclesiastical echoes, with cill being the Irish term for a church or early monastic cell, though the stone itself almost certainly predates any Christian presence in the landscape.