They appear on no Ordnance Survey historic maps. It took an aerial camera, pointed at the ground from above in 1986, to reveal them at all, and even then only as faint cropmarks, the subtle signatures that buried or earthen monuments leave in the colour and growth of vegetation overhead.

The Bruff aerial photographic survey of 1986 first identified the site, catalogued as survey image 292, recording what appeared to be three conjoined barrows, the word describing a class of prehistoric earthen burial monument, typically mounded or ringed, and among the most common ancient monument types found across Ireland. Subsequent satellite and aerial orthoimagery, reviewed between 2005 and 2020, confirmed that at least two of the barrows remain clearly legible on the ground, with a possible third adjoining to the south. The northernmost of the three is a roughly circular earthwork around 25 metres in diameter, defined by a fosse, meaning a surrounding ditch, some 8 metres wide. The central barrow is slightly larger at 30 metres across, with an 11-metre fosse. Both of these ditches are now picked out by a dense, distinctive growth of rushes, the waterlogging that suits rushes apparently persisting in the old cuts. The southernmost feature, the largest of the three at 37 metres in diameter, survives as a raised circular platform with what may be the remnants of a fosse visible along part of its circumference. The three monuments are set on poorly drained rushy pasture roughly 200 metres north-east of the village of Herbertstown, in the broader valley of the Camoge River, which runs some 765 metres to the west. A separate enclosure monument lies about 75 metres to the south-east.

Because the site sits on private farmland and is not marked on standard walking maps, there is no formal access or signage. The rushes that define the fosse lines are most vivid in wetter months, which is also when the ground underfoot becomes difficult. The clearest view of the arrangement, appropriately enough given how the site was discovered, is from above: satellite map tools at sufficient zoom will show the circular earthworks as subtle tonal differences in the pasture. The record was compiled by Alison McQueen and Vera Rahilly and uploaded to the national monuments database in November 2020.