It sits along the crest of a slope that falls away to the north-west, looking out over Saggart Village below, and most people who pass near it would have no particular reason to know what they were looking at. What survives is a section of a linear earthwork, the kind of feature that reads as little more than a lumpy boundary in the landscape, yet carries within its dimensions a record of medieval land management that has largely been forgotten.

The earthwork comprises a flat-topped bank, roughly one to one and a half metres high and five metres wide, flanked on either side by a fosse, the term used for a ditch dug as part of a defensive or boundary construction. The internal fosse has largely silted up over the centuries, now measuring only about thirty to forty centimetres in depth, while the external fosse, wider at three metres across and surviving to around half a metre deep, is overgrown. The scholar Ua Broin, writing in 1957, interpreted the feature as a medieval boundary to Saggart Commons, the common land associated with the nearby settlement of Saggart. Commons were shared grazing and resource lands, and their boundaries were often marked with exactly this kind of earthen bank-and-ditch arrangement, giving communities a physical and legal edge to their shared territory. The record was compiled by archaeologist Geraldine Stout.

The earthwork runs along the townland boundary between Slade and Crooksling, which itself reflects how these old landscape divisions have a habit of preserving, or at least echoing, much earlier arrangements. The area is accessible on foot from the surrounding countryside, though the feature is unexcavated and uninterpreted on the ground, meaning there are no signs or markers to guide a visitor. What you are looking for is a low, elongated bank following the ridge line, with the silted ditch on one side and the broader, overgrown ditch on the other. The external fosse in particular rewards close attention, its width suggesting that the boundary was once a more deliberate and substantial statement in the landscape than its present condition implies.