This one in Gurteenroe, in north County Cork, offers nothing of the sort. It exists, for most of the year, as pure absence: a circular enclosure roughly twenty yards across that leaves no mark on the surface of the land. The only time it becomes legible is when the field is ploughed, and the buried outline rises briefly into view as a soilmark, a ghostly stain in the disturbed earth that betrays the circular boundary beneath.

Circular enclosures of this kind are a familiar feature of the Irish landscape, ranging from prehistoric ring ditches to the ringforts, known in Irish as ráth or lios, that were used as enclosed farmsteads throughout the early medieval period. What they share is a roughly circular plan, often defined by a ditch, a bank, or both, that once marked a boundary between domestic or ritual space and the world outside. At Gurteenroe, the site sits on a north-facing slope in pasture, and what little is known of it comes from local information rather than excavation or formal survey. No one has yet established its date, its function, or the depth of what lies below the grass. It is, in the most literal sense, a site defined by what cannot currently be seen.