Walk the ground at Ballyboher and you would likely notice nothing more than a gentle rise and a shallow dished depression, roughly fifty metres across. It takes an aerial photograph to reveal what lies beneath: the ghostly outline of a double-ringed enclosure, its concentric circles pressed faintly into the soil and readable only through the differential growth of crops above disturbed ground.

What the aerial photographs show is a bivallate ringfort, meaning one enclosed by two concentric ditches, or fosses, rather than the single ditch more commonly seen. Ringforts were the typical farmstead of early medieval Ireland, roughly from the fifth to the twelfth century, built as enclosed family homesteads with earthen banks and ditches serving as boundaries and light defences. This particular example is unusual in its proportions: the outer fosse reaches up to about ten metres in width, which is notably broad, while the inner ditch is comparatively narrow. Between them, a central area of approximately thirty metres in diameter once contained what appears to have been a substantial hut-site. The double-ring layout generally indicates a household of some status or means, since the additional labour of constructing a second enclosure was considerable. Centuries of ploughing and weathering on this level, exposed landscape have reduced the whole structure to barely perceptible undulations, leaving the cropmark as the clearest record of what once stood here.