The circular enclosure beneath the overgrowth is roughly 24 metres across from east to west, defined by an earthen bank that still stands to an internal height of around 1.2 metres and 1.45 metres on the exterior face, with a fosse, that is, a ditch, running around the outside at about half a metre deep and just over two metres wide. That the structure survives at all beneath the vegetation is itself a minor curiosity.

Ringforts, known in Irish as raths when they are earthen rather than stone, were the dominant form of rural enclosure in early medieval Ireland, roughly between the sixth and twelfth centuries. They served primarily as enclosed farmsteads, protecting a family, their livestock, and their stores from opportunistic raiders rather than from organised military assault. The bank-and-fosse arrangement at Dromagarraun follows the classic pattern, modest in scale but legible in its form. What makes this particular example worth attention is the way the surrounding landscape has quietly absorbed it: the modern field boundary does not simply stop at the enclosure but actually incorporates the north-western to north-eastern section of the enclosing bank, so that what was once a prehistoric boundary has been pressed into service as a contemporary one. Denis Power, who recorded and compiled the site notes uploaded in August 2011, also noted numerous cattle breaks in the bank, the result of animals routinely pushing through the earthwork over many generations.

The site sits atop a gentle rise in pasture land, which means that in principle its elevated position should make it easier to locate than many comparable monuments. In practice, the dense canopy of trees and the undergrowth of bushes and brambles make it difficult to read from close range and almost impossible to enter comfortably. Visitors are unlikely to be able to walk the interior without significant effort, and the cattle breaks in the bank, though visible through the vegetation, are narrow gaps rather than convenient entrances. The clearest time to observe the enclosure's outline is likely in late autumn or winter, when the deciduous elements of the overgrowth thin out enough to allow the earthwork's profile to become legible from the field margin.