What survives is a thin layer of tightly packed wood, just seven centimetres deep and one metre wide where it was exposed, the stems ranging from roughly two to four centimetres in diameter, with smaller twigs woven in among them. The whole thing appears to run on a roughly northeast to southwest alignment, though only a fragment has been recorded.

Peatland platforms of this kind were a practical response to boggy terrain. By laying brushwood in close parallel rows, builders could create a stable surface for walking, working, or moving goods across ground that would otherwise be impassable. The peat itself is what makes such structures survivable across centuries or millennia: the acidic, oxygen-poor conditions that make bogs so inhospitable to the living are precisely what preserve organic material that would long since have rotted in ordinary soil. The dimensions recorded at Derryoghil are modest, suggesting either a small working area or simply the surviving edge of something once larger. Without further excavation it is difficult to say more about its age or precise purpose, and the notes offer no dating evidence.