A cashel is a type of ringfort built with stone walls rather than earthen banks, and they are particularly associated with the west of Ireland, where loose field stone was more readily available than deep, workable soil. Most date from the early medieval period, roughly the sixth to the twelfth centuries, when they served as enclosed farmsteads for a single family or small community, the enclosing wall offering protection for livestock as much as for people.

Creevagh Beg is a small rural townland, and the cashel there belongs to a broader pattern of early medieval settlement that is densely distributed across Clare, a county whose thin soils and abundant limestone made stone enclosures the practical and natural choice. These sites were not fortresses in any military sense, though the word cashel shares a root with the Latin castellum. They were working farms, and the area enclosed within the walls would typically have held a house, perhaps a souterrain (an underground passage or chamber used for storage or refuge), and space for animals. Over time, many cashels were absorbed into field systems, their walls robbed for later construction, or simply left to grass over. The fact that one survives at Creevagh Beg, even incompletely, places it among the more durable traces of a settlement pattern that once covered much of rural Ireland.