This one, on a north-east-facing slope just below a hilltop in Curragharneen, offers nothing so obliging. Stand in the pasture above it and you will see only grass. The enclosure exists, as far as the unaided eye is concerned, only from the air.

What gave it away was a circular cropmark spotted on an aerial photograph taken in 1973. Cropmarks form when buried features, walls, ditches, or compacted ground, affect how plants grow above them; in dry summers especially, the difference in soil moisture over a buried ditch or foundation can produce a ring of slightly darker or paler vegetation that is invisible at ground level but legible from above. Neither the first edition Ordnance Survey map of 1843 nor the revised edition of 1904 records anything here, which means the site either escaped the notice of nineteenth-century surveyors or had already been so thoroughly levelled by then that there was nothing left to mark. Two ringforts, the circular enclosed farmsteads characteristic of early medieval Ireland, are visible to the south-south-east and south-east, suggesting that this part of the hill was, at some point, a reasonably busy landscape. Whether this enclosure belongs to the same period, or to something earlier or later, remains an open question. Without excavation, the cropmark alone cannot say.