Its most telling feature is not what survives but what has been repurposed: the earthen bank that once defined the enclosure now forms part of a field fence system, holding a boundary line that farmers have maintained for generations without any particular acknowledgement of what lies beneath the stonework.

Ringforts, known in Irish as raths, were the most common form of rural settlement in early medieval Ireland, typically enclosing a family farmstead within one or more circular earthen banks and ditches. This example at Fountainstown follows that familiar pattern but survives only in fragment. An arc of roughly 22 metres curves from north-northwest to northeast, with an earthen bank still standing to a modest 0.75 metres in height. On its outer face the bank is stone-faced, a detail that suggests a degree of care in its original construction. The external fosse, a shallow ditch running from north to northeast, measures around 0.45 metres deep, much reduced from whatever depth it once held. What remains beyond the incorporated fence line is largely a low rise in the ground, the levelled bank persisting as little more than a swell in the slope, easy to walk past without recognition.