The rath here, the more northerly of the pair, is an oval enclosure measuring roughly 28.7 metres north to south and 25.7 metres east to west, its perimeter still traceable as a degraded bank of earth and stone.

A ringfort, or rath, is a roughly circular or oval enclosed settlement, typically dating from the early medieval period, defined by one or more earthen banks and ditches. They are among the most common monument types in the Irish landscape, though finding two in such close proximity hints at something more sustained about this particular patch of ground, perhaps a family grouping or a sequence of occupation across generations. The Ballyterrim example survives in fair condition, which is to say the bank has softened and spread over centuries but its outline remains legible. What has not helped its preservation is the agricultural activity that came after: a field wall has been built directly over the monument, cutting across it from the south-east around to the south and again at the north, the practical demands of farming laid down without ceremony on top of something far older.