Enclosures of this type are among the most common yet most quietly puzzling features of the Irish countryside. The term covers a broad range of structures, from the circular earthen banks of a ringfort, which would have enclosed a farmstead during the early medieval period, to ceremonial or boundary enclosures of much earlier prehistoric origin. Without more detail, the Drumsillagh example holds its secrets close.

Clare is a county dense with such survivals. Its limestone plains, boglands, and drumlin landscapes have preserved earthworks that elsewhere were long ago ploughed flat or built over. A recorded enclosure in a townland like Drumsillagh points to human activity across a span of centuries, possibly millennia, though precisely who built this one, when, and for what purpose remains, for now, a matter for the archive rather than the open record.