A cashel is a ringfort built from stone rather than earth and timber, its enclosing wall raised dry or mortared to define a farmstead or defended homestead of the early medieval period, roughly between the fifth and twelfth centuries. Ireland has tens of thousands of ringforts in various forms, but each one occupied a specific patch of ground for specific reasons, chosen by people whose names and circumstances are now almost entirely lost.

The placename Gortnahoula, from the Irish meaning something close to "field of the apple trees", carries its own quiet suggestion of a cultivated, inhabited place over a long stretch of time. Cashels of this kind were typically the homes of farming families of middling status, the stone wall serving both as a practical enclosure for livestock and as a marker of territory and social standing. In Sligo, where good building stone is rarely far away, the choice of stone over earthwork was a practical as much as a cultural one. Beyond its classification as a cashel-type ringfort at this particular townland, the specific history of this structure remains undocumented in any accessible public record at present.