These circular enclosures, known in Irish as raths, were the standard dwelling form across Ireland roughly between the fifth and twelfth centuries. A typical example consisted of one or more raised earthen banks, sometimes topped with a wooden palisade, enclosing a central living area where a family would have kept their home, their animals, and their stores. They are among the most common field monuments in Ireland, with tens of thousands recorded across the country, yet their very familiarity has made many of them easy to overlook.

The townland name Drumdigus likely derives from the Irish, with the element droim, meaning a ridge or elongated hill, suggesting the fort occupies or sits near a natural rise in the terrain, a typical choice for a rath builder seeking drainage and a commanding view over surrounding farmland. Clare is particularly dense with such monuments, reflecting centuries of settled agricultural life in the region before and after the coming of Christianity. Without more detailed survey information currently available for this specific site, its precise dimensions, the number of its enclosing banks, and any associated features such as souterrains (underground stone-lined passages sometimes found within raths, used for storage or refuge) remain unconfirmed from the record.