Its most striking characteristic may be its near-invisibility: the enclosure appears on only one historical map, the 1836 edition of the Ordnance Survey six-inch series, where it is marked as a scrub-covered ring. After that single cartographic acknowledgement, it slips out of the documentary record entirely.

The feature is roughly 23 to 25 metres in diameter and is defined by what appears to be a slight scarp or fosse, the fosse being a shallow ditch that typically formed part of an enclosure's boundary or defensive perimeter. By the time satellite imagery captured it around 2013, the interior had become a clearly legible circular patch of grass, distinct enough from its surroundings to catch an attentive eye even from altitude. It was first formally reported by Anne-Karoline Distel, and the enclosure's type, age, and original purpose remain unconfirmed. Circular enclosures of this general scale in Ireland are often associated with early medieval settlement, though without excavation or further survey such an attribution here would be speculative. What can be said is that the landscape itself seems to have preserved the outline, quietly, beneath successive generations of scrub and grass, long after anyone thought to draw it on a map.