The example at Shannon Oughter, in County Sligo, is more reticent than most. What survives is an oval earthwork, roughly 27 metres north to south and just under 25 metres east to west, sitting on the southern downslope of a gentle ridge amid undulating pasture. The enclosing elements are fragmentary: a scarp, a cut or slope in the ground surface, that reaches only half a metre in height on the eastern side and drops to less than a third of that on the west. Two short sections of bank survive at the south-east and south-west, their external face standing at roughly half a metre, their internal face a modest 15 centimetres. A fosse, the encircling ditch that would originally have reinforced the boundary of the rath, can be traced faintly and intermittently around the full perimeter, though it is barely 2.1 metres wide where it remains legible.

A rath is the Irish term for a ringfort, a class of enclosed farmstead that was the dominant settlement form in early medieval Ireland, broadly between the fifth and twelfth centuries. Thousands survive across the island in varying states of preservation, and they range from imposing multivallate monuments with multiple banks and ditches to low, barely-there traces like this one. What makes the Shannon Oughter site quietly interesting is precisely its incompleteness. The bank fragments at the south-east and south-west suggest either that the enclosure was never fully finished, or more likely that centuries of agricultural use on productive pasture ground have worn away what was once a continuous circuit, leaving only the most sheltered corners intact. The ridge setting would have offered reasonable drainage and visibility, both practical considerations for a farming household choosing a site.