The ground around it is former lakebed, and the platform itself, measuring roughly 13 metres north to south and 21 metres east to west, is scattered with large irregular limestone slabs, some up to one and a half metres long and nearly a metre wide. A smaller platform is attached to its northern edge, and the whole arrangement sits on the south side of a small inlet, overlooked by rising ground to the south. It is the kind of place that reads, at first glance, as geology until you begin to wonder whether anyone shaped it deliberately.

Researchers Karkov and Ruffing first drew attention to a cluster of such rock platforms along this shoreline in the early 1990s, and subsequent analysis by Aidan O'Sullivan placed this particular site, recorded as Rochfort Demesne 6, within a broader early medieval landscape. The platform would originally have stood about ten metres from the shoreline, in shallow water, which is precisely the kind of position associated with crannógs, the artificial or semi-artificial island settlements that were used across Ireland from the Bronze Age through to the early modern period. The nearest confirmed crannóg is at Goose Island, some 420 metres to the north. There is also a mound recorded around 550 metres to the east. Whether this platform was a settlement, a working surface, a landing stage, or something else entirely remains an open question. O'Sullivan described it as a possible prehistoric or medieval rock platform, potentially connected to the early medieval crannóg activity at Goose Islands, but the evidence stops short of certainty.