It has been assigned a monument number, it has been mapped, and it is recognised as a structure worth preserving. Beyond that, the documentation available online is essentially silent.

Enclosures of this kind are among the most common, and most varied, of Ireland's field monuments. The term covers everything from the circular earthen ringforts of the early medieval period, used as defended farmsteads, to later ecclesiastical enclosures marking the boundaries of an early Christian site. Clare has no shortage of either type. Without further detail it is impossible to say which category Killulla belongs to, what survives above ground, or when it was built. That ambiguity is itself worth noting. Many such sites persist quietly in the landscape, known to local farmers and occasionally to walkers, while the formal record catches up around them.