Stand in the low-lying pasture west of the townland boundary with Plaukarauka and you will find ordinary grazing land, cut through by land drains and watercourses, unremarkable to the eye. The enclosure that occupies this ground has no visible walls, no earthworks, no sign of itself whatsoever at ground level. It exists, for most practical purposes, only from the air.

The site came to light during the Bruff aerial photographic survey of 1986, when an image catalogued as Bruff 45 (AP 4/3671) revealed a semicircular cropmark in the field below. Cropmarks of this kind form when buried features, ditches or banks long since levelled, affect the growth of grass or cereal crops above them, producing differences in colour or height that are invisible to a person walking through but legible from altitude. The D-shaped outline recorded here is the kind of plan associated with enclosures of early medieval or prehistoric date, though the notes do not assign it to a specific period. It does not appear on any Ordnance Survey Ireland historic mapping, which suggests it had already ceased to be a surface feature before systematic cartography began. Subsequent ortho-imagery captured between 2005 and 2012, and again on a Google Earth image dated 25 March 2017, confirmed the cropmark was still readable under the right conditions. A pair of ring-barrows, circular earthen burial mounds, lies roughly 250 metres to the north-west, hinting that this corner of County Limerick was used in some meaningful way across a considerable span of time. The site record was compiled by Alison McQueen and Vera Rahilly and uploaded in October 2020.

For anyone curious enough to seek it out, the field is accessible via the general area around Ballynaclogh, west of the Plaukarauka townland boundary in south County Limerick. There is, practically speaking, nothing to observe on foot. The enclosure rewards only those with access to aerial imagery, and the clearest views come from the georeferenced orthoimages available through the OSi or via Google Earth, where the D-shape emerges as a faint but legible ghost in the cropped ground. Dry summers, when soil moisture contrasts are at their sharpest, tend to bring cropmarks into their strongest relief. The nearby ring-barrows are at least partially visible as earthworks and provide a more tangible reason to explore the wider landscape.