What was once a clearly defined ring barrow, a type of funerary earthwork consisting of a raised circular mound surrounded by a ditch, now leaves no visible trace at ground level. The planting of trees across the area has done what centuries of weathering alone could not, swallowing the form entirely.

When Kilbride-Jones surveyed the site in 1939 as part of the Irish Tourist Association's archaeological survey, the monument was still legible in the landscape. He recorded a raised, perfectly flat-topped circular platform, 28 metres in diameter and standing 0.95 metres high, enclosed by an uninterrupted circular fosse, the term used for the surrounding ditch that typically defines this class of monument. The site, known locally as Knockaniller, had already appeared on the Ordnance Survey's six-inch map of 1843, where it was marked as a circular enclosure. Its position on the hill placed it to the south-west of two passage tombs at Knockaniller, suggesting this part of Saggart Hill served as a focus for ritual and funerary activity across an extended period of prehistory. A preservation order, number 153 of 1940, was placed on the monument under the National Monuments Acts, recognising its significance even as its visibility was already beginning to decline.

The site is protected in law, but for a visitor the practical reality is that there is currently nothing to see at ground level. The tree planting noted by researchers, referenced by Healy in 1975, has continued to obscure the earthwork. Anyone with a serious interest in the monument would do better to consult the 1843 Ordnance Survey six-inch mapping, available digitally, to understand where the enclosure once sat in relation to the surrounding topography. The passage tombs nearby at Knockaniller remain the more accessible point of reference for exploring this part of the Dublin hills, and they help place the now-invisible barrow within a wider prehistoric landscape that the hillside still quietly holds.