The rath at Ballinphort is the kind of earthwork that rewards a careful eye rather than a casual glance, its defining features reduced over centuries to a gently swelling outline in pasture land, the sort of thing easily mistaken for a natural undulation if you did not know to look.

A rath is a type of ringfort, the most common field monument in Ireland, typically consisting of a circular bank and ditch enclosing a domestic settlement, used largely during the early medieval period. This example measures roughly 40 metres north to south and 36 metres east to west, forming a slightly raised sub-circular area enclosed by an earthen bank that survives best on the northern, western, and south-western sides. To the east a shallow fosse, the external ditch that would once have defined the boundary, remains visible, and there are traces of an outer bank at the north-east. The interior slopes gently from west to east, and faint cultivation ridges running east to west across it hint at agricultural use at some point in the site's history. A second ringfort lies only 90 metres to the north-west, which suggests this small rise was considered worth occupying more than once, or that the two formed part of the same broader settled landscape. What complicates the picture now is the intrusion of later boundaries: a post-1837 field boundary cuts across the south-western side of the monument, and another, associated with an old laneway, intersects the south-eastern edge, each one a layer of more recent land use laid over something much older.