These circular enclosures, known in Irish as raths, were the standard form of rural settlement across Ireland from roughly the early medieval period through to around the twelfth century. A typical rath consists of one or more earthen banks and ditches enclosing a raised interior, within which a family and their household would have lived, their livestock secured at night against both predators and rivals. Tens of thousands of them survive across the Irish landscape in varying states of preservation, yet each one represents a specific community, a specific patch of ground farmed and defended across generations.

Querrin itself is a small coastal townland on the northern shore of the Shannon, a quiet place today that gives little outward sign of its early medieval past. The presence of a rath here is consistent with what we know of Clare's dense early Christian settlement patterns, a county where ringforts appear with remarkable frequency across the drumlin and coastal farmland alike. The name Querrin derives from the Irish, and the area sits close to the tidal inlets and mudflats that would have made this stretch of the estuary both productive and navigable for communities living here over a thousand years ago.