The enclosure, roughly twenty metres east to west and sixteen metres north to south, faces southeast down the slope, and would be easy to walk past without knowing what to look for. It is the kind of feature that satellite imagery has quietly brought back into visibility, a shape that might otherwise have faded entirely from the record.

Enclosures of this type are among the most common yet least understood features of the Irish landscape. They served many purposes across different periods, from the raths and ringforts of the early medieval period, which functioned as enclosed farmsteads, to earlier ceremonial or boundary structures. Without excavation, it is rarely possible to say which category a particular example belongs to, and this one at Barntick is no exception. What the aerial view does confirm is the suboval plan, a slightly irregular oval rather than a strict circle, and its deliberate position on elevated ground above the lake. Killone Lake itself is notable in the surrounding area, associated with the Augustinian nunnery of Killone, founded nearby in the twelfth century, which gives the broader landscape a long history of settlement and activity.