The site exists, as far as current records show, only as a cropmark, a faint discolouration in growing vegetation that betrays buried archaeology to a camera lens pointed downward from the air. In July 1989, aerial photography captured the outline of a fosse, that is, a defensive or boundary ditch, tracing a rough circle roughly forty metres across, with what may be an entrance gap opening to the south-east.

Cropmarks form when buried ditches or pits retain more moisture than the surrounding subsoil, causing the plants above them to grow slightly taller or greener, or conversely when buried walls and foundations dry out the soil above them, stunting growth. Either way, the pattern is legible from altitude even when the ground surface gives nothing away. The circular enclosure at Lougharuane belongs to a type common across Ireland, often associated with early medieval settlement, though without excavation it is impossible to assign a precise date or function. What makes the spot quietly remarkable is that it does not stand alone. A ring-ditch, a type of circular earthwork frequently linked to prehistoric funerary or ritual use, lies approximately 170 metres to the east, and a second circular enclosure sits around 190 metres to the south-east. Three separate circular features within a few hundred metres of one another suggests this corner of north Cork was a place of some sustained significance, even if the nature of that significance remains, for now, entirely a matter of inference.