Enclosures of this kind, broadly circular or oval earthworks defined by banks and ditches, are among the most common and most enigmatic features of the Irish countryside. They range in date from the Bronze Age through to the early medieval period, and their purposes varied accordingly, from settlement and farming to ritual use, though the two were not always distinct in the minds of the people who built them.

Kiltullagh itself is a quiet townland in an area of Galway that carries considerable archaeological depth. The name derives from the Irish Coill Tulach, meaning the wood of the hill, suggesting a landscape that was once more heavily wooded than it appears today. Enclosures in this part of Connacht often formed the nucleus of early farming communities, with a raised bank serving both as a practical boundary for livestock and as a marker of territory or status. Without more detailed survey information, it is difficult to say more about the precise form or date of this particular example, but its presence on the record of monuments confirms it as a recognised feature of the local archaeology.