On a north-facing slope in Ross, County Waterford, there is a circular earthwork that has been quietly shrinking on paper for nearly two centuries. The Ordnance Survey mapped it in 1840 with a diameter of around 50 metres, and again in 1927 at roughly 60 metres, yet on the ground today the visible feature measures only 35 metres across. Whether that discrepancy reflects the enclosure's gradual erosion, variations in how different surveyors read a faint landscape feature, or something else entirely, is not recorded.

What remains is a slightly dished, grass-covered circle defined by a low scarp, a term for a gentle slope or drop in ground level, of just 0.4 metres. There is no visible fosse, the diagnostic surrounding ditch that typically accompanies an earthwork enclosure, and no identifiable entrance gap in the scarp. Circular enclosures of this kind are common across Ireland and date broadly to the early medieval period, though without excavation this one carries no confirmed date or function. They served variously as farmsteads, cattle enclosures, or places of assembly, and the absence of a fosse here makes interpretation harder rather than easier.