Set in low-lying grassland, it survives as a faint oval outline measuring roughly 36.8 metres east to west and 32.5 metres north to south, its shape legible more in principle than in practice. A later field wall cuts straight through the monument at both its northern and southern edges, the kind of pragmatic agricultural intrusion that has quietly dismantled countless early medieval enclosures across Ireland. Only on the south-western to western arc does anything approaching the original form still hold, where a fosse, the shallow ditch dug to define and defend the enclosure, and an outer bank of earth and stone remain discernible. To the east of the field wall, a degraded inner scarp is now the sole enclosing element.

Ringforts are the most numerous monument type in the Irish archaeological record, with estimates running to around 50,000 across the island. Most date to the early medieval period, roughly the fifth to twelfth centuries, and served as enclosed farmsteads for a single family or household. They were typically defined by one or more earthen banks and intervening ditches, the number of enclosing elements often reflecting the social standing of the occupant. A bivallate example such as this one, with two banks and a fosse between them, sits a step above the simplest single-banked enclosures. At Bunoghanaun, however, the passage of time, agricultural reuse, and the general flattening effect of livestock and weather have reduced that hierarchy to a matter of slight undulations in a field.