The site first caught archaeologists’ attention through cropmarks visible in a 1990s aerial photograph, with the distinctive pattern showing up clearly as variations in crop growth above the buried remains. These marks trace out three sides of a large rectangular earthwork; the southern, western and northern boundaries of an enclosure that once measured approximately 100 metres by 50 metres internally.

The structure consists of an earthen bank with an external fosse, or defensive ditch, running around its perimeter. While the eastern side appears to be closed off by what might be a natural ridge in the landscape, the other three sides show clear evidence of deliberate construction. This type of earthwork arrangement was typical of medieval fortified sites throughout Ireland, where the combination of bank and ditch provided both defensive capabilities and a clear statement of authority over the surrounding territory.

What makes this site particularly intriguing is its proximity to another possible castle site to the north, suggesting this area may have held strategic importance during the medieval period. The cropmarks remain visible at ground level under the right conditions, when differences in soil moisture and depth affect the growth of grass or crops above. These subtle variations in the modern landscape continue to tell the story of a fortification that likely stood here centuries ago, its earthen ramparts long since levelled but its footprint still etched into the Irish countryside.