It is easy to miss, and easier still to mistake for a natural feature of the lakebed. But a narrow stone causeway, running eight to ten metres from the modern shore, connects the platform to dry land in a way that nature rarely arranges so tidily. The platform itself measures roughly twelve metres north to south and twenty metres east to west, rising only half a metre above the present waterline. Limestone slabs, each around a metre in length, are scattered across its upper surface, and large stones break the water around it. It sits today in about fifty centimetres of water, though calculations suggest it would originally have been in approximately one metre of depth, some seventy metres from what was then the shoreline, making it a more deliberately isolated structure than it now appears.

The platform was first identified by Karkov and Ruffing in the early 1990s as part of a cluster of similar rock features along the eastern shoreline of Rochfort Bay. Aidan O'Sullivan later examined it in detail, placing it in the context of the wider early medieval landscape of Lough Ennell. A crannóg, which is an artificial or modified island used as a dwelling or place of refuge, particularly during the early medieval period in Ireland, lies four hundred metres to the north at Goose Island, and a mound of uncertain character sits six hundred metres to the east. The Goose Island crannóg is considered the most likely point of association, and the platform may have served a related function, perhaps as a staging point, a fishing station, or a working platform connected to the lake-dwelling community nearby. Whether it dates to prehistory or the early medieval centuries remains unresolved, and no firm dating evidence has yet been published.