The oval enclosure at Lisdeligny measures roughly 87.5 metres east to west and 64.5 metres north to south, making it a substantial feature, though you would be forgiven for missing it entirely. What remains is largely a scarp, a natural-looking slope of earth that is in fact the degraded boundary of a man-made enclosure, with a later field wall built directly on top of it along the southern, western, and northern sides.

Enclosures of this kind, built on elevated ground and defined by a raised earthen bank or scarp, are found across Ireland and typically date to the early medieval period, though some have prehistoric origins. They served various purposes, from farmstead enclosures protecting people and livestock to sites of more ceremonial or political significance. The Lisdeligny example is poorly preserved, which makes it difficult to say much with confidence about its original function or date. One detail does survive with some clarity: a possible entrance gap, approximately three metres wide, is still visible on the northern side, hinting at how people once moved in and out of whatever was contained within.