No mound breaks the turf, no marker announces what is underfoot, and yet this ring-barrow, a circular funerary earthwork consisting of a raised central platform ringed by a ditch, known as a fosse, and a low outer bank, holds its ground on the northern edge of Saggart Hill in south County Dublin. The complete absence of any surface expression is not neglect; it is simply what centuries of land use can do to even a reasonably substantial structure.

The monument sits at Knockandinny, on the northern extremity of Saggart Hill, in the townland of Crockaunadreenagh. When examined, the platform measured approximately thirty metres in diameter and was found to have been constructed from small stones, a detail recorded by Kilbride-Jones in 1950. Ring-barrows of this type are generally associated with Bronze Age funerary practice, serving as ceremonial or burial enclosures, though their precise function varied. The site was documented more recently by Healy in 1975, who confirmed that nothing remained visible at ground level. Despite this invisibility, the monument carries legal protection under a preservation order, designated as PO no. 154/1940, made under the National Monuments Acts 1930 to 2014, which means that the ground cannot be disturbed regardless of what sits on top of it.

For anyone curious enough to seek it out, Slade Valley Golf Course lies to the south-west of Dublin city, accessible via Brittas or the R405. The monument's location around the third hole is approximate in practical terms, since there is genuinely nothing to see at the surface. What makes a visit worthwhile is less the monument itself and more the broader landscape context, the northern slope of Saggart Hill affording views across a terrain that retains its prehistoric significance even when that significance is buried. The records were compiled by Geraldine Stout and Padraig Clancy, whose work on the Dublin monuments database has brought sites like this one into at least documentary visibility, even when the ground itself offers nothing to the eye.