In the undulating grassland of Killuppaun, roughly a hundred metres west of the Ahascragh River in County Galway, an early enclosure once occupied a modest but meaningful patch of ground. By the time anyone thought to look closely, it was gone, replaced by a large quarry that removed not just the physical remains but any chance of understanding what had been there.

The enclosure was recorded on the third edition of the Ordnance Survey six-inch map, published in 1946, where it appears as a subcircular shape measuring approximately fifty metres east to west and forty metres north to south. Enclosures of this general type, broadly circular or oval earthworks defined by a bank and ditch, are among the most common archaeological features in the Irish landscape, and they served a range of purposes across many centuries, from the enclosure of a farmstead to the demarcation of a ceremonial or ritual space. What this particular example at Killuppaun represented in terms of date or function is impossible to say. No visible surface trace survives, and the quarry that now occupies the site has ensured that the ground itself can offer no further answers. The map remains the sole witness.