Enclosures of this kind are among the most common yet least understood monuments in the Irish countryside. The term covers a broad range of circular or sub-circular earthworks, from the domestic ringforts that once housed early medieval farming families to ritual or boundary structures of far earlier date. Without further detail, the Glencally example holds its secrets quietly.

Mayo is a county unusually dense with such remains, its thin soils and relatively low levels of modern agricultural disturbance having preserved earthworks that elsewhere were long ago ploughed flat. Glencally itself is a small and sparsely documented townland, one of thousands carved out across Connacht during centuries of land division and administrative survey. The enclosure's presence there suggests human activity at some point between the prehistoric and early historic periods, though without excavation or detailed field investigation, its precise date and function remain open questions.