No entrance survives on the surface, or if one ever existed it has been absorbed so completely into the landscape that it leaves no trace. This particular combination, an earthwork worn almost level with its surroundings and stripped of any obvious way in, is what makes raths quietly strange objects. They were once the enclosed farmsteads of early medieval Ireland, typically dating from roughly the fifth to the twelfth century, ordinary domestic settlements that were nonetheless ringed with banks and ditches to mark territory, manage livestock, and project a degree of social status.

What survives at Cuilkeel is modest even by the standards of its type. The fosse is shallow, recorded at only about ten centimetres deep, suggesting significant silting or erosion over the centuries. The interior is described as overgrown, and the site has been partially overlain by a field bank running northwest to southeast, with a track running along its northeastern side. A coniferous plantation lies just beyond this boundary. These are the incremental pressures that quietly erase earthworks across Ireland: field reorganisation, tree planting, the steady accumulation of vegetation. The rath persists beneath all of this, its circular outline still legible as a slight but continuous change in ground level.