The lake was Lough Nalarsadh, now reduced to low-lying wet ground, and the platform is all that remains of a crannog, an artificial or partially artificial island built in shallow water, typically during the early medieval period, as a defensible dwelling place. The water that once surrounded and defined it is largely gone, but the form persists: a raised, roughly circular mound, its edges softened by vegetation, with a depression visible at its south-eastern side.

The site was recorded by Claffey in 1983, who noted not only the platform itself but also traces of what appeared to be a causeway, running north-west to south-east at a tangent to the monument. Causeways are a common feature of crannog sites, providing a controlled approach to the island, though their exact alignment here, running at a tangent rather than directly toward the platform, gives this one a slightly unusual character. Whether that reflects the original design or simply what survives is difficult to say without closer investigation, and the record notes plainly that the site was not visited in person during the survey period.