A crannog is an artificial island usually built in lakes, rivers and estuarine waters of Scotland and Ireland. Crannogs were widespread in Ireland with an estimated 1200 examples. However, the Drumclay Crannog, which is an artificial island built in a lake, is the first of its type to be excavated in the North of Ireland since 1870.
The site of the crannog at Drumclay in Co. Fermanagh has been known to archaeologists since the nineteenth century. The plans for the A32 link road originally envisaged bridging the site, allowing it to be preserved in situ. The plans were changed during the course of road construction and excavation began, directed initially by Declan Hurl and subsequently by Dr Nora Bermingham.