The one at Poulawillin, in County Clare, is among them. A rath, as this type of ringfort is properly called, is an enclosed farmstead of the early medieval period, typically circular and defined by one or more earthen banks and ditches. They were the homes of farming families and minor landholders roughly between the fifth and twelfth centuries, and Clare has more than its share of them, tucked into fields and hillsides across the county.

Poulawillin itself is a townland name with a decidedly Clare flavour, and the ringfort sitting within it belongs to a category of monument that, despite its abundance, still holds genuine archaeological interest. Each rath is its own small world: the remains of a banked enclosure that once contained a household, its outbuildings, perhaps an underground storage passage called a souterrain, and all the quiet business of early medieval rural life. The earthworks at such sites can survive remarkably well under permanent pasture, preserving the outline of a life lived well over a thousand years ago.

Beyond its location in County Clare, the available details about this particular site are limited, and it would be a disservice to dress that gap with guesswork. What can be said is that Poulawillin sits in a county where the density of early medieval settlement was considerable, and where the landscape still rewards those patient enough to read it carefully.