It exists, as far as the record goes, only from the air. A roughly circular feature approximately forty metres in diameter shows up in a 1973 aerial photograph as a differential growth pattern, the kind of subtle discolouration in vegetation that betrays buried or disturbed ground beneath, where soil compacted by an ancient wall or bank causes grass to grow differently from the surrounding pasture. On the ground itself, in the rough grazing of a hillside terrace, there is nothing visible at all.

This phenomenon, sometimes called a cropmark or soilmark depending on what type of vegetation reveals it, is one of the quieter ways archaeology surfaces. Buried foundations alter how moisture and nutrients move through the soil, and those differences show up in how plants grow above them, sometimes only under particular conditions of drought or low sun angle. The 1973 photograph caught something on this Kerry hillside that has left no other trace. Within the larger enclosure, a smaller possible enclosure was also identified, suggesting the site may have had an internal division or a secondary structure, a configuration sometimes associated with early medieval ringforts or their precursors, though the evidence here is too slight to say much with confidence.