Walk the field and you will find only grass, a gentle north-facing slope, and the ordinary rhythms of a working pasture in mid Cork. The ringfort that once stood here has left no bank, no ditch, no hollow that the eye can follow. It has become, in effect, invisible, which makes what occasionally appears all the more striking.

A rath, to use the Irish term, is a type of early medieval enclosed settlement, typically consisting of a roughly circular earthen bank and ditch enclosing a farmstead. Thousands were built across Ireland between roughly the fifth and twelfth centuries, and many have been damaged or levelled entirely by centuries of agriculture. At Currabeha, the structure above ground is gone, but the earth remembers it. When the field is ploughed, a soil mark appears: a circular discolouration in the disturbed ground that traces the outline of the old enclosure. Soil marks of this kind form because buried features, whether filled ditches, compacted banks, or decomposed organic material, retain moisture and nutrients differently from the surrounding subsoil, and that difference shows up in the colour and texture of freshly turned earth. The circular mark at Currabeha was noted through a personal communication from John Sheehan of Kilmurry, and it is one of the only ways this particular site makes itself known at all.