It belongs to a category of monument that turns up across Ireland with quiet frequency: a defined, bounded space, usually circular or oval, formed from an earthen bank or a stone wall, whose original purpose might have been domestic, agricultural, or ceremonial. Without more detail, it is impossible to say which applies here, and that ambiguity is itself worth noting.

Enclosures of this kind range enormously in date and function. Some are the remains of ringforts, the enclosed farmsteads that were built and occupied throughout the early medieval period, roughly the fifth to the twelfth centuries, and which remain the most common field monument in Ireland. Others are later, or earlier, or served purposes that left fewer traces. Rinneen is a small coastal townland on the western edge of the Burren, a region of County Clare where the limestone pavement, the glacial erratics, and the dense concentration of archaeological sites make almost any patch of ground potentially significant. The Burren has been farmed, quarried, and inhabited for thousands of years, and enclosures there can predate written history by a considerable margin.