These circular enclosures, known in Irish as raths, were the standard farmstead of early medieval Ireland, typically consisting of an earthen bank and ditch enclosing a family's dwelling and outbuildings. Tens of thousands of them survive across the country in varying states of preservation, yet each one marks a specific moment of settlement, a decision by particular people to enclose a particular patch of ground.

Clare is especially rich in such monuments, and the Burren region in particular preserves ringforts in considerable numbers, partly because the thin soils and rocky terrain made later intensive agriculture difficult. Boolavaun itself is a small townland in this part of the county, where the limestone pavement and scrubby vegetation have a way of keeping older features visible in a way that deeper-soiled landscapes do not. The rath at Boolavaun would have functioned as a defended farmstead during the early medieval period, roughly between the fifth and twelfth centuries, its bank serving less as a military fortification and more as a social boundary, a marker of status and territory in a society where such distinctions mattered greatly.