It is a rath, the Irish term for a ringfort, the most common type of monument in the Irish landscape. Ringforts were typically enclosed farmsteads of the early medieval period, home to a single family and their livestock, defined by one or more banks of earth or stone. This one at Bengour is modest but complete enough in its form to read clearly in the ground.

The enclosure measures roughly 32 metres in diameter, bounded by a single earthen bank that reaches 1.4 metres in height along its north-north-east to south-west arc, with portions of that bank retaining their original stone facing, a detail that hints at the care once taken in its construction. On the opposing arc, from south-west to north-north-east, a scarp of around 0.8 metres provides the complementary edge of the enclosure. Beyond the main bank, a shallow external fosse, a ditch dug to provide the material for the bank above it, survives to a depth of about 0.25 metres. It is far less dramatic than it once was, worn down by centuries of agriculture and weather, but its line is still legible in the ground. Stone-faced earthen banks like this one were a practical and territorial statement, defining a household's space in a period when such distinctions carried social as well as physical weight.

The site sits within ordinary farmland, and there is nothing to mark it out from a distance. The south-west-facing slope it occupies would have offered its original inhabitants good light and reasonable drainage, considerations that mattered as much then as now. The stone-facing visible in sections of the bank repays a close look, offering a glimpse of deliberate construction beneath what the centuries have made seem like a simple grass ridge.