The monument measures roughly fifty metres across and was once substantial enough to be recorded on the Ordnance Survey six-inch maps, but what a visitor encounters today is considerably less than what those maps implied: a degraded scarp, a fosse (a defensive ditch), and a low outer bank surviving only along the northern arc from northwest through to east. The western portion of the interior has been quarried away entirely. Elsewhere, the boundary of the monument is readable only because the vegetation grows differently there, a subtle biological memory of something buried or compressed beneath.

The site belongs to a class of circular enclosures that punctuate the Irish countryside in considerable numbers, many of them related to ringforts, the farmstead enclosures that were the dominant form of rural settlement from the early medieval period onward. What makes Gardenfield quietly interesting is the company it keeps. Two ringforts lie within close range, one approximately thirty metres to the southwest and another around eighty metres to the south-southwest. Whether the enclosure was functionally related to these neighbours, whether it predates them, or whether the clustering is simply the result of a landscape that attracted repeated settlement over centuries, the physical remains alone cannot say. Killanin and Duignan noted the site in their 1967 survey of the county, by which point the quarrying had already done its damage.