For much of the year, the surrounding ground is wet and soft rather than genuinely flooded, which makes this a slightly anomalous example of the type. A crannog is an artificial or partly artificial island, built up in a lake or wetland, and used across Ireland and Scotland from the Bronze Age through to the early modern period as a defensible or simply elevated place to live. This one is modest: a circular raised platform roughly twelve metres across and just over a metre high, its surface now densely matted with long grass and scrub.

The site attracted antiquarian attention in the nineteenth century. W. G. Wood-Martin, writing in 1886, noted that a trench had been cut through the island and revealed that it was built from clay mixed with stones, with those stones arranged in a deliberate pattern around the outer edge. That kind of structured edging is consistent with how crannogs were typically constructed, the stones helping to retain the built-up material against the water. A narrow depression, roughly eighty centimetres wide and partially filled with stones, is still visible on the southern side of the mound. It is likely the scar left by Wood-Martin's trench, slowly subsiding and filling over the century and more since he recorded it. The Ordnance Survey Letters of 1836 also reference the site, placing it within a tradition of local documentation that stretches back well before formal archaeological survey.