A circular earthwork, roughly 38.5 metres in diameter, sits beneath the tree cover, its bank and external fosse still legible in the ground despite the encroachment of vegetation. The fosse is the encircling ditch that would originally have lain outside the bank, together forming the defining boundary of a rath, the Irish term for a ringfort, which was typically a farmstead of the early medieval period, roughly 500 to 1000 AD.

The site is described as overgrown but in fair condition, which in archaeological terms means the essential form survives without serious collapse or deliberate destruction. An entrance is visible on the northern side, a detail that places it among the majority of Irish ringforts whose openings faced broadly northward or eastward, though the reasons for this preference remain a matter of some debate among archaeologists. The demesne name, Castlekelly, suggests later landownership layered over a landscape already long settled, and the woodland that now encloses the rath is itself a product of that more recent estate history rather than any ancient forest.