Ringforts, known in Irish as raths, were enclosed farmsteads typically built between the early medieval period and around the twelfth century. A rath usually consisted of one or more earthen banks and ditches arranged in a ring, enclosing a homestead and offering protection for a family and their livestock. Thousands survive across Ireland in varying states of preservation, and Clare, with its limestone-rich terrain and long history of rural settlement, holds a considerable number of them.

Beyond its classification and location, the particular history of the Brisla example remains largely undocumented in publicly available sources at present. What can be said is that the townland name itself belongs to a naming tradition reaching back through Irish into older patterns of land use and local identity. The rath would have been the centre of a small farming household, its interior perhaps containing a timber dwelling, storage pits, and the everyday evidence of early medieval rural life. Excavations of comparable sites elsewhere in Clare and across Munster have turned up hearths, animal bones, iron tools, and occasionally souterrains, underground stone-lined passages that served for storage or refuge.