That single word, enclosure, covers a broad range of things in the Irish archaeological landscape: a ringfort, perhaps, where an early medieval farming family once lived behind an earthen bank and ditch; or something older, a Bronze Age ceremonial boundary, a cattle pound, a settled farmstead whose occupants left no name behind. The classification alone is enough to mark it as a place where someone, at some point, drew a deliberate line between inside and outside.

Glanlea lies in a county that is unusually dense with such monuments. Kerry's terrain, wet and difficult to cultivate intensively, meant that early settlements were often preserved rather than ploughed away, surviving as low earthworks or overgrown banks in rough pasture. Enclosures of this kind are typically associated with the early medieval period, roughly the fifth to the twelfth centuries, when the ringfort was the dominant form of rural settlement across Ireland, though similar enclosed sites were constructed across a much wider span of prehistory. Without further detail specific to this site, the date and character of the Glanlea enclosure remain genuinely open questions.