What makes its story quietly melancholy is the timing: by the time anyone formally described it, the clock was already running out.

The enclosure sat at the summit of the hill at Mullawornia, positioned to command wide views over the surrounding countryside, which is characteristic of sites that may have carried some defensive or territorial significance. It measured roughly eighteen metres north to south and twelve metres east to west, forming a raised oval defined by a substantial earthen and stone bank. Notably, there was no fosse, the term for a ditch or trench that typically accompanies such a bank, suggesting either a simpler form of enclosure or one whose original construction differed from the more defensive type. The entrance faced east. Strikingly, the monument did not appear on the Ordnance Survey six-inch maps of either 1837 or 1883, which means it escaped the attention of the nineteenth-century surveyors who mapped Ireland in considerable detail. A report compiled in 1976 captured the enclosure while it was still, at least partially, present. By that point, or shortly after, quarrying activity had destroyed it entirely.

There is nothing left to visit. The hill at Mullawornia no longer holds any visible trace of the structure. What remains is the record of an oval raised in the earth, facing east from a commanding position, noted once and then lost, which is a fate that has come to many such monuments across the Irish midlands where the land has been worked hard and the older shapes beneath it have not always survived.