Crannog, Cornaseer, Co. Cavan
Co. Cavan |
Settlement Sites
Beneath the surface of Cornaseer Lough in County Cavan, about eighty metres from the shoreline, lies the submerged remains of a crannog, an artificial island built from timber, stone, and compacted earth that served as a defended dwelling place in early medieval Ireland.
From the bank, the only clues to its existence are a small number of large boulders breaking the water, easy to mistake for natural features of the lough bed.
The site was noted as early as 1885 by Milligan, and when a survey was conducted in 1942, the observer Davies recorded something more evocative: a couple of wooden timbers still protruding above the waterline. Crannogs were typically constructed by driving piles into shallow lake beds and building up layers of brushwood, peat, and stone to create a stable platform, sometimes ringed by a timber palisade. They were used across Ireland from the Bronze Age well into the early modern period, functioning as farmsteads, refuges, and occasionally seats of local power. The timbers Davies saw have since disappeared from view, swallowed back by the lough, leaving only the boulders as surface evidence of what lies below.