The name itself offers a small clue: turlough, from the Irish tuar loch, refers to a seasonal lake, one that fills in winter through rising groundwater and drains again in summer, leaving behind a distinctive wet grassland. Bán, meaning white or pale, suggests open, unenclosed ground. The combination points to a low-lying, periodically flooded area of the kind that appears frequently across the limestone landscapes of Connacht, and it is precisely this sort of marginal, seasonally unpredictable terrain that tends to preserve early enclosures, simply because later agriculture found it difficult to disturb them.

Enclosures of this type in the west of Ireland range widely in date and function. Some are the remains of ringforts, the circular farmsteads that were built and occupied across Ireland roughly between the early medieval period and the end of the first millennium. Others may mark out field systems, burial grounds, or boundaries associated with ecclesiastical sites. Without detailed survey information it is not possible to say which category this particular example belongs to, but the presence of a named, recorded monument in a townland shaped by seasonal flooding suggests something durable enough to have survived both the water and the centuries.