The earthwork, a roughly circular raised area measuring about 30 metres north to south and 32 metres east to west, was almost certainly repurposed after 1700 as a tree-ring, the kind of ornamental planting arrangement fashionable on Irish and British estates during the Georgian period. That reuse has left it in an unusual condition: genuinely ancient, yet shaped in part by the aesthetic tastes of a later landed gentry.

A ringfort, or rath, is one of the most common monument types in Ireland, typically a circular area enclosed by an earthen bank and external ditch, or fosse, that served as a defended farmstead during the early medieval period. This example sits on a north-east facing slope of a gently rising hill in undulating grassland, and its enclosing bank and shallow fosse are now only poorly preserved, though they survive best from the north-north-east around to the south-east. The interior slopes slightly from south-west to north-east and holds several beech and oak trees, almost certainly planted during the estate's period of formal landscaping. The townland boundary with Kilmaglish runs along the road less than five metres to the west, meaning the monument sits right at the edge of two distinct pieces of territory, ancient and administrative alike.

The association with Knockdrin Castle adds an extra layer of interest. The castle demesne was the kind of planned landscape where landowners routinely absorbed older earthworks into their grounds, sometimes to create a fashionable air of antiquity, sometimes simply because levelling them was more trouble than it was worth. Whether by intention or convenience, the ringfort survived, its prehistoric origins now dressed in a canopy of Georgian planting.