A rath is a type of ringfort, typically a raised circular platform enclosed by one or more earthen banks, and they are among the most common archaeological monuments in Ireland, numbering in the tens of thousands. This one, however, turned out to be something of an anti-monument: a site that accumulated decades of careful scrutiny and then, at the moment of excavation, offered nothing at all.

The enclosure was first recorded in 1974 as an approximately circular, platform-like area, roughly 40 metres east to west, edged by earthen banks on the south and east and a higher embankment on the north and west. A field wall and a fossway, a type of raised trackway or causeway, cut across its southern segment, and the whole thing was thick with blackthorn scrub. Surveyors tentatively labelled it a probable rath and moved on. A further inspection in 1993 by C. O Rahilly found only the north-east quadrant still clearly visible, the rest buried under dense vegetation, but the slightly curving raised platform still suggested the outline of something deliberate. Then, in 1996, ahead of the site being absorbed into the expanding Aughinish Alumina industrial complex, a full archaeological excavation was carried out. The dig, recorded by Byrne in 1996, produced no finds and no features of archaeological significance whatsoever. The conclusion was blunt: the site may be of no archaeological significance at all.

The enclosure no longer exists as a visible feature, having been incorporated into the Aughinish Alumina facility, a large industrial plant on the island that processes bauxite into alumina. Aughinish Island itself is accessible by a causeway from the south Clare shoreline, though the industrial site is private and not open to the public. What remains of this story is less a place to visit than a record worth pausing over: a circular earthwork that spent more than two decades looking like history, then gave up nothing when asked to explain itself.