A rath, or ringfort, is a roughly circular enclosure defined by one or more banks and ditches, built from the early medieval period onwards as a farmstead for a single family or small household. Thousands survive across the country in varying states of preservation, from near-perfect earthen rings to barely legible traces in grass, and Teermaclane's example is one of this long, scattered company.

Ringforts were the dominant settlement form in Ireland from roughly the fifth to the twelfth century, though some were built earlier and many remained in use, or were reused, well beyond that period. They were domestic rather than purely defensive structures, their banks serving as much to define territory and keep livestock in as to resist attack. In Clare particularly, where the land ranges from the limestone pavements of the Burren to more sheltered lowland ground, these enclosures are woven into the agricultural history of the region at a fundamental level. The townland name Teermaclane itself is anglicised Irish, and the presence of a recorded rath here is a reminder that this ground was organised, farmed, and inhabited long before any documentary record took notice of it.