This slightly irregular rectangular enclosure measures approximately 26 metres north to south and 29 metres east to west, defined by earthen banks of varying heights around its perimeter. The northern and western sides feature a low bank, about 1.7 metres wide and rising 0.3 metres internally but 0.9 metres externally, whilst the eastern and southern banks stand considerably higher, having been incorporated into the existing field boundaries over time.

What makes this site particularly distinctive is its defensive fosse, or ditch system, which varies significantly around the enclosure. The southern side boasts a deep external fosse measuring 2.8 metres wide and 0.4 metres deep, whilst the remaining sides are surrounded by shallower ditches. Today, mature ash and sycamore trees line the edge of the site, creating a natural border that adds to its atmospheric quality and helps preserve the earthworks beneath.

The exact purpose of this moated enclosure remains uncertain; it could have served as a habitation site for a medieval farming family, providing both security and status, or it might simply have been a managed copse for timber production. Such moated sites are relatively common across Ireland and typically date from the 13th to 15th centuries, when Anglo-Norman settlers and prosperous Irish families built these defended homesteads throughout the countryside. The Knigh site’s preservation allows visitors to appreciate how medieval communities shaped their landscape, creating practical yet imposing earthworks that have endured for centuries.