Thousands were built between roughly the fifth and twelfth centuries, and the landscape still holds the traces of many, though not all have survived as legibly as this one.

The rath at Corrabola is a raised circular platform roughly thirty metres in diameter, bounded by a low bank of earth and stone. Outside that bank lies a fosse, the shallow encircling ditch that would originally have reinforced the enclosure's defensive or territorial character, and beyond the fosse, on the southern arc running from south-southwest to southwest, there is a second, outer bank with faint traces of a further ditch beyond it. This double-bank arrangement, even in its reduced state, suggests a site of some elaboration. The outer bank is modest, barely thirty centimetres high, and the ditches are shallow, but their presence indicates that whoever occupied this place invested more effort in its construction than was strictly necessary for a simple farmstead enclosure. On the eastern side, a gap of just over four metres in the bank, accompanied by a causeway, is thought to mark the original entrance. Elsewhere around the circuit, the earthworks have been absorbed into later field boundaries, as happened to countless such monuments across the midlands as agricultural practice gradually reshaped older features into convenient walls and property divisions.

The trees growing across the rath are worth noting. In many parts of Ireland, ringforts acquired a reputation as fairy forts, places associated in folklore with the sídhe, and that belief protected a great many of them from clearance long after the land around them had been improved and enclosed. Whether or not that tradition attaches to this particular site, the result is visible: a wooded circular mound standing apart from the surrounding pasture, its internal topography quietly preserved beneath the canopy.