A crannog is an artificial island, or a heavily modified natural one, constructed from layers of timber, peat, brushwood, and stone, and used as a dwelling place from the Bronze Age through to as late as the seventeenth century in some parts of Ireland. The surrounding water served as a moat without the need for one to be dug, and the approach by boat gave occupants both warning and control over who came close.

The Annagh example is recorded as a monument, which places it in a tradition that runs deep across the Irish midlands and west, where lakes and wetlands made this kind of island settlement not just practical but, in many periods, desirable. Clare has a number of such sites scattered across its low-lying lake country, remnants of a way of life in which the boundary between land and water was something to be negotiated rather than avoided. Beyond its presence in Annagh and its classification as a crannog, the specific history of this particular site, its dates of occupation, any excavation, and any finds associated with it, remain to be detailed in the public record.