The island itself, measuring roughly 2.5 kilometres north to south and varying from 800 metres to 1.8 kilometres east to west, once sat properly isolated in the River Barrow/Nore system. Today, the channels that once flowed along its northeastern and eastern edges have long since silted up and been reclaimed as farmland, leaving only the western channel active.

The moated site appears on both the 1839 and 1940 Ordnance Survey maps as a substantial embanked feature, and its outline remains clearly defined in the modern landscape. The rectangular enclosure measures approximately 165 metres northeast to southwest and 125 metres northwest to southeast, with its boundaries now primarily marked by field banks. Historical accounts from the early 20th century, particularly Power’s 1906 description, reveal that the site was once far more elaborate; double banks with an intervening fosse, or defensive ditch, surrounded the entire area. These earthworks, with their distinctive curved corners, had a combined width of about 12 metres.

While much of the original defensive structure has been lost to time and farming, a significant section of the inner bank survives along the southeastern side. This remnant, stretching for 43 metres at the southern end, stands 1.5 metres high on its interior face and spans 7 metres in width, offering visitors a tangible connection to the site’s medieval past. Such moated sites were typically constructed by Anglo-Norman settlers or wealthy Irish families between the 13th and 15th centuries, serving as fortified farmsteads or manor houses that combined defensive features with agricultural management.