This grass-covered site measures 34 metres from north to south and 33 metres from east to west, forming an almost perfect square. The boundaries are marked by scarps standing about half a metre high on the western and northern sides, whilst a modern field wall defines the eastern edge.

The southern boundary reveals the site’s most intriguing feature: an earthen bank approximately 5.5 metres wide and 30 centimetres high, accompanied by an outer moat. This moat, measuring 6 metres across at its top and about 30 centimetres deep, would have provided an additional defensive barrier in medieval times. Such moated sites were typically associated with Anglo-Norman settlements in Ireland, serving as fortified homesteads for colonists or local lords during the 13th and 14th centuries.

Located within the historic Rockingham Demesne, this earthwork sits just 15 metres northeast of another enclosure, suggesting this area held strategic importance for centuries. The proximity to Lough Key would have provided both a water source and natural protection, whilst the elevated position on Longford Hill offered clear views across the surrounding landscape; ideal for spotting approaching visitors or threats.