It exists, as far as the current record is concerned, only as a cropmark: a faint circular trace, roughly 70 metres in diameter, that becomes legible solely through satellite imagery captured in spring 2022. A fosse, the shallow ditch that typically defines such enclosures, outlines the perimeter, though it is described as slight, meaning it has either eroded considerably or was never deeply cut in the first place. What gives the site an added layer of interest is that it may contain a second, smaller enclosure within it, around 30 metres across and placed off-centre, which is an unusual arrangement. Just outside the north-western edge of the larger enclosure, the entrance to a souterrain has already been recorded. A souterrain is an artificial underground passage, usually stone-lined, associated with early medieval settlement and used variously for storage, refuge, or movement between spaces.

The site was first brought to attention by Jean Charles Caillére, who identified it from Google Earth imagery. Its position within the grounds of Lisrenny House, approximately 500 metres to the north-north-east of the house itself, places it within a gently rolling agricultural landscape typical of inland Louth. The combination of an unrecorded enclosure, a possible internal feature, and a neighbouring souterrain suggests this small hill may have been a focus of early medieval activity, though the cropmark alone cannot confirm the nature or date of the enclosure with any certainty. Cropmarks of this kind form when buried ditches or banks affect the growth of surface vegetation above them, becoming visible from the air under the right seasonal conditions, particularly during dry spells when differential soil moisture becomes pronounced.