That small, overgrown island turns out to be something more than neglected land. Satellite imagery captured between 2011 and 2013 reveals the outline of what appears to be an oval enclosure, roughly 53 metres north to south and 50 metres east to west, with a probable entrance facing the south-east. The gorse and scrub that make it difficult to examine on the ground are, in a sense, also what preserved it: the enclosure survived precisely because the land around it was converted to productive use and this particular patch was left alone.

Enclosures of this kind, typically defined by an earthen bank or wall forming a roughly circular or oval boundary, are among the most common archaeological features in the Irish landscape, yet individual examples often go unrecorded for decades. This one was noted and reported to the National Monuments Service by Ros Ó Maoldúin, bringing it into the formal record for the first time. Its function and date remain unconfirmed; without excavation or more detailed survey, it is not possible to say whether it served as a ringfort, a livestock enclosure, or something else entirely. The south-east facing entrance is a detail worth noting, as that orientation appears with some regularity in early medieval Irish enclosures, though it is not diagnostic on its own.