The ringfort at Magheraboy, in County Sligo, is one such site. A ringfort, in broad terms, is a roughly circular enclosure defined by one or more earthen banks and ditches, used primarily as a farmstead during the early medieval period, roughly between 500 and 1000 AD. They were the everyday domestic architecture of their time, and their presence in a townland is usually a marker of settled, agricultural life stretching back well over a millennium.

Magheraboy itself is a townland whose name derives from the Irish Machaire Buí, meaning the yellow plain, a topographical description that places it firmly in the low-lying, open country characteristic of much of County Sligo. Beyond the name and the general class of monument, the specific history of this particular enclosure, its dimensions, its condition, whether any souterrain (an underground stone-lined passage, often used for storage or refuge) is associated with it, remains difficult to establish from available sources at this time. What can be said is that its survival into the present, even as an earthwork, is itself notable in a landscape where such features have frequently been lost to agricultural improvement over the past two centuries.