A rath is a type of enclosed farmstead, typically dating from the early medieval period, formed by earthen banks and ditches around a circular living area. This one is roughly 33 metres across, and what makes it quietly interesting is the layering of its defences: an inner earthen bank, in places still stone-faced on its interior side, a deep outer fosse, and beyond that a second outer bank running from south around to the north-north-west. Where the natural ground falls steeply towards the river to the west, the builders appear to have let the landscape do some of the work, with the outer bank at its most pronounced along the western and north-western arc where the slope reinforces it.

The causewayed entrance to the north, roughly three metres wide, is the kind of detail that rewards attention. A causeway entrance in a ringfort means the ditch was left uncut at the opening rather than bridged, creating a solid approach across otherwise broken ground. Somewhere near the centre of the interior there is a possible souterrain, an underground passage or chamber of the sort often associated with storage or refuge in early medieval settlements. The interior itself has gone to fern, with a small cluster of trees in the north-western quadrant and the inner bank line marked by further planting. One later detail survives in documentary form: the six-inch Ordnance Survey map of 1842 records a lime kiln at the north-eastern edge of the interior. Lime kilns, stone-built furnaces used to burn limestone into quicklime for agricultural use, were a common feature of nineteenth-century Irish farming, and their presence inside or beside older earthworks was not unusual, the ready-made enclosure offering a convenient sheltered site for the structure.