What survives here is not dramatic, but it is legible to those who know what they are looking at: a roughly circular raised area some 36 metres across, the remnant of a rath, one of thousands of early medieval farmstead enclosures that once dotted the Irish countryside.

A rath, or ringfort, was typically a circular area of land bounded by an earthen bank and a ditch, built to enclose a farmstead and offer some degree of protection for its occupants and their livestock. At Laharan, the enclosing scarp still rises to around 0.8 metres at its best, and a shallow external fosse, the ditch that originally accompanied the bank, survives most clearly on the western side, where it reaches a depth of roughly half a metre. The bank itself has largely been absorbed into the landscape, but a slight internal lip remains along the south-east to north-north-east arc, rising no more than 0.3 metres, enough to confirm that an enclosing structure once stood here. Elsewhere along the scarp, a more recent field boundary has been laid directly on top of the older earthwork, as has happened on countless Irish sites where successive generations found a ready-made boundary to borrow.

The grass-covered interior tilts gently down toward the east, and the surrounding land is in tillage, which means the site sits within a worked agricultural landscape much as it would have done in early medieval times, though its original inhabitants would not have recognised the crop rotations or machinery that now pass close by. The layering of boundaries here, ancient scarp, borrowed field wall, ploughed field, gives the site a quiet density that rewards a careful look even if, at first glance, it appears to be little more than a slight rise in the ground.