A rath is an earthen enclosure, typically circular or oval, built during the early medieval period as a farmstead for a family of some local standing. This one in Bracklagh sits at the base of an east-facing slope, positioned to overlook low-lying pasture, with a stream marking the southern edge of the townland just twelve metres away. That combination of water access, elevated ground, and open sightlines to the east is exactly what a farmer or minor landowner of a thousand or more years ago would have looked for.

The enclosure is oval, measuring roughly 30 metres north to south and nearly 24 metres east to west, and is defined by an earthen scarp, a steep internal face that rises to about two metres on the western side. Around the outside runs a fosse, a defensive ditch, now only about 30 centimetres deep in places and largely legible as a slight depression where rushes grow more thickly than the surrounding grass. Remnants of an outer bank survive at the northwest and southeast, though the western edge of the fosse has been clipped by a field ditch beside a modern road. The original entrance appears to survive on the eastern side, where the scarp flattens into a ramp and a causeway roughly four metres wide carries the ground level over the fosse. Inside, the western half is occupied by an unexplained oval rise, about 16 metres long and a metre high, with a fairly level top and, at its northern end, a circular hollow roughly three metres across and 40 centimetres deep. The function of this internal mound is not recorded, though such features within ringforts can reflect the remains of earlier structures or activity. The scarp's unusually vertical face suggests some reshaping may have occurred in more recent centuries. Adding further interest, another rath sits approximately 100 metres to the northeast, hinting that this part of Bracklagh once supported a cluster of early medieval settlement.