The rectangular enclosure measures approximately 30 metres from northeast to southwest and 25 metres from northwest to southeast, surrounded by a substantial ditch about 4 metres wide. What makes this site particularly intriguing is the presence of a leat, a man-made channel that connects the northern corner of the enclosure to a stream flowing roughly 50 metres to the northwest.

These moated sites were once common features of the Irish medieval landscape, typically dating from the 13th to 15th centuries. They consisted of farmsteads or manor houses surrounded by water-filled ditches that served multiple purposes: defence, drainage, and status symbol. The Knockbine example fits this pattern perfectly, situated in low-lying ground where water management would have been essential for both practical and defensive reasons.

While the site is now only visible as cropmarks from above, its outline can be traced across several sets of aerial photographs taken over the years. The clearest views come from images captured in the late 20th and early 21st centuries, including the OSI series from 2000 and Bing aerial surveys. These photographs reveal how medieval engineering has left its mark on the landscape, with the distinctive rectangular pattern and connecting waterway still discernible after centuries of agricultural use.