In the townland of Ballinla in North Cork, a low mound sits on private land, its nature and purpose officially unresolved, known to the wider world only through a single cartographic snapshot taken nearly two centuries ago.

The sole record of this feature comes from the 1842 Ordnance Survey six-inch map, Ireland's first large-scale national survey and a document that captured countless earthworks, enclosures, and field monuments that have since vanished or gone unrecorded by any other means. On that map, the mound appears as a hachured form, the conventional mark used by surveyors to indicate raised ground, measuring roughly twenty metres on a north-north-west to south-south-east axis and about ten metres across. An earlier note described it simply as a linear mound of around fifteen metres in length. Whether it represents a burial monument, a field boundary remnant, a natural glacial feature given accidental prominence, or something else entirely is impossible to say. When researchers sought access to the land to carry out even a basic inspection, permission was refused, leaving the mound in a kind of official limbo, catalogued but unexamined, present on paper but closed to scrutiny in practice.