Ringforts, known in Irish as raths or liosanna, are among the most common archaeological monuments in Ireland, with estimates running to around 45,000 surviving examples across the country. They are the remains of enclosed farmsteads, typically dating from the early medieval period, roughly 500 to 1000 AD, and consist of one or more circular earthen banks and ditches surrounding a domestic area where a family and their animals would have lived. The fact that so many survive at all is partly due to folklore: generations of farmers avoided disturbing them, believing them to be the dwelling places of the fairy folk.

The ringfort at Carrownakilly has not yet been formally documented in any detail available to the general public, which places it in an unusual category even by Irish standards. While thousands of ringforts have been surveyed, photographed, and described, a significant number remain known only by location, their earthworks unexamined and their histories unwritten. Carrownakilly itself is a small rural townland, its name derived from the Irish, and like many such places in Clare it sits within a wider landscape that was densely settled during the early medieval period. Without excavation or detailed survey, it is impossible to say whether this particular enclosure was a modest single-family farmstead or something more substantial, such as a raised rath or a bivallate fort with multiple enclosing banks.