That quiet erasure is the whole story here, and it happened within living memory. A rath, the Irish term for a ringfort, typically a circular or near-circular enclosure defined by one or more earthen banks and ditches, once sat on this rounded glacial hill, its elevated position giving clear sightlines in every direction. Such sites were the farmsteads of early medieval Ireland, occupied roughly between the fifth and twelfth centuries, and Mayo contains hundreds of them. This one, however, did not survive the twentieth century.

When it was first inspected in 1984, the rath was still legible on the ground. It covered a subcircular area measuring approximately 33 metres north to south and 30 metres east to west, defined by two low earthen banks with an intervening fosse, the ditch that would have run between them. Parts of the structure had already been absorbed into the working landscape: the outer bank along the south-west to north-west arc had been incorporated into a north-south field fence, and along the north-west to north-east arc the fosse and outer bank had been cut through by an east-west field boundary. The interior of the enclosure sloped gently downward from west to east. A decade later, by the time of a follow-up inspection in 1994, the rath had been levelled entirely. No upstanding remains were visible above ground, save for what may have been remnants of the outer bank, by then indistinguishable from the field boundary to the west.

What makes this site quietly arresting is less what it was than what its disappearance represents. The drumlin is still there, still offering those views in all directions. The field boundaries that consumed the rath's banks and fosse are still there too, in their way a kind of archive, carrying the geometry of an early medieval enclosure forward in the landscape without knowing it.