What was once a roughly oval earthwork, measuring approximately 54 metres east to west and 42 metres north to south, now survives only in fragments across pastureland on a low ridge at Ballintober. The surviving bank of earth and stone is modest at best, reaching no more than 0.6 metres in height and about 2 metres wide, and there is no longer any trace of a fosse, the defensive ditch that would typically have ringed the outer edge of such a structure.

A rath is a type of ringfort, the most common class of monument in the Irish countryside, built predominantly during the early medieval period between roughly the fifth and twelfth centuries. They served as enclosed farmsteads, the bank and ditch combination offering a degree of protection for livestock and family alike. By the time the Ordnance Survey produced its six-inch map series in 1837, this particular example was still recognisable enough to be marked as a circular enclosure and labelled simply "Fort". What the mapmakers recorded has since been steadily eroded: the modern road that cuts through the south-western arc appears to have caused the most significant damage, removing that portion of the bank entirely. The north-western and northern sections survived longer, but only because they were folded into a field boundary, becoming agricultural infrastructure rather than archaeological monument. Adjoining the outer face of the surviving bank at the north-east, there are foundations that may indicate a house site, hinting that the area immediately outside the enclosure was also in use at some point, though the relationship between the two features is unclear.