A crannog is an artificial or partially artificial island, typically constructed from layers of timber, peat, brushwood, and stone, and inhabited from the Bronze Age well into the early modern period. They were defensible, private, and often associated with people of some local status. The Woodfield example is recorded as a monument, which means something survives, or survived, to be noted and mapped, even if the details of what exactly remains are not yet in wide circulation.

Crannogs are found across Ireland and Scotland, and County Clare has several. They tend to cluster around the county's many loughs and low-lying marshy ground, landscapes that would have made island dwelling both practical and strategically sensible. Occupation of individual crannogs often stretched across many centuries, with successive generations adding material, rebuilding structures, and occasionally abandoning and reoccupying the same site. The objects recovered from crannogs during drainage works or archaeological excavation have ranged from elaborately decorated metalwork to everyday wooden tools, preserved by the waterlogged conditions that make such sites archaeologically valuable. Without further detail specific to the Woodfield site, it is not possible to say when this particular crannog was built, who occupied it, or what if anything has been recovered from it.