There is nothing to see there now, and that near-total erasure is itself part of the story: the earthwork that once occupied this prominent rise was largely destroyed by quarrying, rescued only briefly by archaeology before it vanished from the surface of the ground altogether.

In 1970, aerial photography revealed that a quarry was expanding directly to the east of the site, which until that point had been classified simply as a ringfort by Killanin and Duignan in their 1967 guide to Irish antiquities. A rescue excavation was hurriedly carried out in 1971 by E. Rynne, and what he uncovered was considerably more complex than a domestic enclosure. The earthwork measured up to around 68 metres in diameter, with a flat-topped central mound of roughly 28 metres across, encircled by a fosse (a defensive or ceremonial ditch) and an outer bank. A gap six metres wide opened to the south-east. Inside the mound sat a smaller semicircular enclosure, barely five and a half metres across, defined by its own bank and shallow fosse, surrounded by scattered pits and post holes with no obvious pattern. Most telling of all was the absence of any hearth, combined with two concentrations of cremated bone and a shallow cremation burial. Rynne concluded from this evidence that no one had lived here. The exposed hilltop position, the ritual deposits, the formal earthwork architecture: these pointed instead towards ceremony, possibly an assembly site or an inauguration mound, the kind of elevated, theatrically visible place where a king or chieftain might have been formally proclaimed before witnesses. About 30 metres to the north-east lay a ring-barrow, a low circular burial monument, adding further weight to the sense of this ridge as a landscape set apart for significant and solemn occasions.

Nothing of the earthwork survives above ground today. The quarry claimed it, and Fahy's Hill is now ordinary-looking pasture, its former shape and purpose recoverable only through the 1971 excavation records and that timely aerial photograph taken just before the machinery moved in.