From the air or on a clear day from higher ground, the geometry is unmistakable, but at ground level the place announces itself quietly, through a low earthen bank and a shallow ditch rather than anything dramatic.

What survives here is a rath, the most common type of early medieval enclosure in Ireland, typically built between roughly the fifth and twelfth centuries as a farmstead or family compound. A rath consists of a roughly circular raised bank, known as a ringfort, with an external fosse, meaning a dug ditch, whose excavated earth was used to build up the bank itself. This one at Lisduff measures forty-one metres in diameter, which places it comfortably within the normal range for such sites. The bank is now colonised by trees, giving the enclosure its distinctive silhouette in an otherwise open pastoral landscape. A gap roughly two metres wide on the east-south-east side may represent the original entrance, the point through which animals were driven in at dusk and people passed in and out of daily life during the early medieval period. The site is described as being in fair condition, meaning the essential form is legible even if time and agriculture have softened the edges.