The site near Glen in the old barony of Clanwilliam never appeared on any Ordnance Survey historic maps, which means generations of cartographers passed over this patch of rough, undulating pasture without recording what lay beneath it. What eventually gave it away was not a dig or a survey on foot, but a cropmark, the faint differential growth of grass or grain above buried features that, when viewed from altitude, can resolve into something unmistakably structural.

The mark was first picked up during the Bruff aerial photographic survey in 1986, recorded under the reference Bruff 72, AP 4/3681. What the camera caught was a roughly rectangular outline, and subsequent orthoimagery has confirmed it consistently: the feature measures approximately 12 metres east to west and 8 metres north to south. That is a modest but coherent footprint, in the range associated with early medieval or prehistoric domestic structures. The site sits within a wider field system and has company in the landscape. A ringfort, one of the circular enclosed farmsteads that dot the Irish countryside from the early medieval period, lies roughly 200 metres to the southeast, and another hut site sits about 240 metres to the west-southwest. Together they suggest this was once a worked and settled upland rather than marginal ground. The site was compiled for the record by Alison McQueen and Vera Rahilly, with the entry uploaded in September 2020.

There is nothing to see at ground level in the conventional sense. The pasture here is rough and uneven, and the buried outline does not announce itself to a visitor standing in the field. What you are looking for, if you visit, is the landscape context rather than the monument itself: the way the land rolls, the proximity of the old field boundaries, the sense of how this corner of Limerick was once organised for habitation. The cropmark is best appreciated through the aerial images held in the record, particularly the Google Earth orthoimage from November 2018. For anyone interested in how archaeologists identify sites that have left almost no surface trace, this is a clear example of what remote sensing can recover from an otherwise unremarkable stretch of upland ground.