The rectangular enclosure measures approximately 13.3 metres from north to south and 16 metres from east to west, though its northern edge has been truncated by a modern field boundary and road. What remains is defined by a low earthen scarp, roughly 1.6 metres wide and just 20 centimetres high, that runs along the eastern, southern and western sides of the site.

Beyond these scarps lies the fosse, or defensive ditch, that once provided protection for whatever structure stood within. This water-filled ditch measures 4.8 metres wide but is now only about 15 centimetres deep; centuries of silting and agricultural activity have reduced what was likely once a formidable barrier. The interior of the enclosure slopes gently towards the east and appears featureless today, though archaeological investigation might reveal post-holes, foundation trenches or other evidence of medieval occupation beneath the turf.

This sub-rectangular enclosure was first identified through aerial photography in the mid-20th century, appearing on OS photograph 2348/7. Such moated sites are relatively common across Ireland, particularly in areas of Anglo-Norman settlement during the 13th and 14th centuries. They typically housed timber-framed manor houses or farmsteads, with the water-filled ditch serving both defensive and status-symbol purposes. The Lissobihane example, compiled for the archaeological record by Jean Farrelly in August 2011, represents one small piece of medieval Ireland’s complex settlement pattern.