This circular earthwork, measuring 25.5 metres across, consists of two concentric banks of earth and stone with a shallow ditch, or fosse, running between them. The outer bank shows careful construction, with both its inner and outer faces lined with stones, some of considerable size. Though time and weather have taken their toll, particularly on the northern sections where both banks have been levelled, the structure’s defensive intent remains clear.

The original entrance likely faced east-northeast, where archaeologists have identified a stone-lined gap in the outer bank, just over a metre wide. A causeway, now heavily disturbed, once bridged the fosse here, connecting to a corresponding break in the inner bank. Additional causeway features can be spotted immediately south of this main entrance and to the northeast, suggesting either secondary access points or later modifications to the site. The strategic positioning of the entrance, away from the most exposed Atlantic side, demonstrates the practical defensive thinking of its builders.

Within the protected interior, evidence suggests a possible house site, catalogued as SL011-009002, though details remain sparse. Ringwork castles like this one represent an important phase in Irish fortification, typically dating from the Anglo-Norman period when earth and timber defences were rapidly constructed to secure newly conquered territories. The choice of location, combining good pasture land with defensive advantages and commanding views, reflects the dual military and economic functions these structures served in medieval Ireland.