On it stands a solitary upright stone, the kind of monument that raises more questions than the landscape is willing to answer. Standing stones are among the most enigmatic survivals of prehistoric Ireland, erected anywhere from the Neolithic period through to the early medieval era, and their purposes remain genuinely uncertain. Some marked boundaries, some may have been focal points for ritual, and others seem to have served as waymarkers or memorials. That this one was raised on what is now an island, cut off from the mainland by the sea, adds a particular layer of strangeness to the question of why anyone put it there at all.

The island also carries the ruins of an early Christian hermitage, which suggests that the site drew people across a long span of time, and that its isolation from the mainland was at some point a feature rather than a problem. Hermits and monks of the early Irish church frequently sought out places that were difficult to reach, and small sea stacks along the Clare coast were occasionally chosen for exactly that reason. Whether the standing stone predates the ecclesiastical settlement or was incorporated into it in some way is not recorded. The name Bishop's Island hints at a later ecclesiastical association, though the origins of that name are not clear.