A roughly D-shaped area, around eighteen metres across at its widest, sits slightly raised above the surrounding land, ringed by a low bank of earth and stone and an outer fosse, the term for the ditch that typically accompanies such a boundary. Neither is dramatic in scale; the bank rises only about thirty centimetres above the interior, and the fosse is shallow enough to be easy to miss, particularly where it has disappeared altogether along the south-southeast to southwest arc. What catches the attention is the geometry: one side of the D is notably straight, the bank running in a clean linear course along the south-southwest, while the rest curves around to complete the enclosure.

This kind of earthwork is a familiar, if still poorly understood, feature of the Irish landscape. Enclosures of roughly this form and scale were constructed across many centuries, used variously as farmsteads, stock enclosures, or settlement boundaries, though pinning any one example to a specific period or function without excavation is rarely possible. What survives at Lecarrow is enough to read the basic arrangement: a defined interior space, a surrounding bank roughly 2.4 metres wide, an external ditch of similar modest proportions, and, set against the inner face of the bank at the north-northeast, the remains of a hut site. That detail is worth pausing on. A hut site positioned against the interior of the bank suggests someone once lived or sheltered here, using the enclosure wall itself as part of their structure, a practical economy that turns up repeatedly in early settlement archaeology across Ireland. Where the original entrance once stood, no trace now remains legible in the ground.