The site is classified as an oval univallate rath, meaning a roughly oval enclosure defined by a single earthen or stone bank, a form of enclosed farmstead that was common across early medieval Ireland. What makes this particular example quietly compelling is what lies within: the collapsed remains of two conjoined huts, their walls long since fallen into loose, undifferentiated heaps of stone. A third spread of rubble to the east may represent a further structure, though its interpretation is uncertain.

The site was documented as part of the Corca Dhuibhne archaeological survey of the Dingle Peninsula, published by J. Cuppage in 1986. That survey remains one of the more thorough regional inventories of its kind for the southwest of Ireland, cataloguing a landscape unusually dense with early remains. The huts inside the rath at Killelton were already in poor condition by the time they were recorded, reduced by then to the kind of low, ambiguous scatter that requires some imagination, and some familiarity with comparable sites, to read. Conjoined huts of this type, sharing a wall or constructed in deliberate proximity within an enclosure, suggest a working domestic compound rather than a single household, though little more can be said about the people who occupied it.