The circular embanked enclosure at Drumlara, roughly 25 metres in external diameter, was recorded on the 1835 edition of the Ordnance Survey six-inch map, where it was labelled simply as a "Fort". Whether it still presents clearly on the ground or has been absorbed further into the surrounding landscape is harder to say; what is certain is that its early nineteenth-century surveyors considered it worth marking.

The structure is most likely a rath, the commonplace term for a small ringfort of early medieval Ireland. Raths were typically enclosed farmsteads, their circular earthen banks serving as boundaries for a household and its livestock rather than as military fortifications, despite the word "fort" attached to so many of them in later usage. This particular example has been incorporated into a field bank running roughly south to north-west, which is a common fate for raths in agricultural landscapes; over centuries, farmers found it practical to extend or absorb existing earthworks into their own field systems rather than clear them entirely. The result is that the enclosure at Drumlara sits folded into the working land around it, its original profile partially merged with boundaries that have nothing to do with its origins.