On a south-east-facing slope at Cutteen in County Waterford, there is an archaeological site that is, by almost any measure, invisible. No mound breaks the skyline, no ditch catches the eye, no stonework announces itself to a passing walker. What exists instead is a field bank curving gently for some 34 metres to the south-west, and the reasonable suspicion that this curve is not accidental.

The Ordnance Survey's six-inch map, surveyed in 1840, recorded something more legible at this spot: a small circular embanked enclosure with an external diameter of roughly 25 metres. Enclosures of this general type are common across Ireland, and many are the remains of ringforts, the enclosed farmsteads that formed the basic unit of rural settlement throughout the early medieval period, roughly the fifth to the twelfth centuries. Whether the Cutteen example belongs to that tradition is not confirmed, but the size and form are consistent with it. What the 1840 cartographers could see clearly, subsequent decades of pasture farming have largely erased. The earthwork is now not visible at ground level; the field bank may be all that survives of a boundary that once enclosed a small domestic world.