This is a rath, the Irish term for a ringfort, the most common archaeological monument type in Ireland. These were typically enclosed farmsteads built and occupied during the early medieval period, roughly between the fifth and twelfth centuries, and they survive in their thousands across the country, most of them unexcavated and quietly deteriorating in fields. What makes this one at Lisbane worth a closer look is the degree to which the landscape has continued to work around it, even as the monument itself fades.

The site, documented by Denis Power and uploaded to the record in August 2011, encloses an area of approximately twenty metres in diameter. Two concentric earth-and-stone banks once defined the space, separated by a fosse, which is the formal term for a ditch dug to add depth and height to a bank's outer face. The inner bank still reaches an external height of around 1.8 metres along its northern arc, where traces of stone facing remain visible, though from the north-east round to the south-west it is entirely hidden beneath dense vegetation. The outer bank survives at a much reduced 0.5 metres externally, best preserved on the south-western to western side. A causeway entrance, 3.5 metres wide, opens at the east, which was a common orientation for ringfort entrances. Interestingly, a farm passageway now runs just outside the inner bank along the southern side, following the line of a field boundary that had already been removed by the time it appeared on the 1923 Ordnance Survey six-inch map.

Access to the site is through working pasture, so any visit should be made with the usual consideration for farm land. The earthworks are most legible from the north, where the inner bank retains the most height and where the stone facing, if visible at all, would be easiest to distinguish beneath the vegetation. The interior offers little to see directly, given the dense overgrowth, but the causeway entrance at the east gives a clear sense of the original threshold. The 1923 OS map reference is a small but telling detail, suggesting that the field layout around this monument has shifted at least once within living memory, with the rath itself the longest-standing feature in that particular stretch of ground.