It is the kind of feature that a casual walker might take for a natural rise or a quirk of the field boundary, yet its geometry tells a different story. The enclosure measures 12.4 metres in diameter, and its surrounding bank, though heavily overgrown with briars and furze, still rises to an external height of 2.15 metres on its best-preserved arc between north and east. On the southeastern side the bank lowers and flattens into a scarped edge roughly 0.8 metres high and 2.85 metres wide, suggesting either deliberate shaping or centuries of gradual collapse.

Enclosures of this circular, banked type are found widely across Ireland and are generally associated with early medieval settlement, though the term covers a broad range of uses, from domestic ringforts to ceremonial or boundary markers. A ringfort, to use the more familiar name, was typically a farmstead enclosed by one or more earthen banks and ditches, and they were built in their thousands between roughly the fifth and twelfth centuries. Whether this particular example at Dooncaha fits neatly into that tradition is not recorded. What the survey compiled by Denis Power does note is that the bank has been folded into the surrounding field boundary system along its southwestern to northern arc, meaning the enclosure's edges have been repurposed by later agricultural arrangements rather than left to stand apart from them.

The interior of the enclosure is now divided by a modern wire fence running east to west across its middle. The northern half is inaccessible, entirely covered by briars, while the southern half has been incorporated into the northwest corner of a paddock belonging to a derelict farmhouse that stands to the southeast. Visitors approaching the site should expect working or formerly working farmland and the practical difficulties of dense scrub vegetation. The panoramic views noted in the survey are the clearest reward for reaching the hilltop, and the external face of the bank on the northern and eastern sides offers the best sense of the enclosure's original scale and presence.