These circular earthwork enclosures, known in Irish as raths, were the everyday farmsteads of early medieval Ireland, typically dating from roughly the fifth to the twelfth centuries. A bank of earth, sometimes accompanied by a ditch, defined a family's living space and offered a degree of protection for people and livestock alike. Tens of thousands once dotted the Irish countryside; a significant number survive, though many have been levelled by agriculture or development over the centuries.

Drumline lies in County Clare, a county with a particularly dense concentration of early medieval settlement remains, shaped by the same pastoral farming economy that produced raths across the island. Without detailed excavation or survey data in the public domain, the specific history of this particular enclosure, its date, its occupants, and its condition, remains difficult to establish with any precision. What can be said is that its survival into the present, even in an unrecorded state, places it among the quieter witnesses to a period of Irish history that left its clearest marks not in stone monuments but in the subtle earthen geometry of fields and farmsteads.