The rectangular cropmark, measuring approximately 40 metres in overall diameter, appears clearly in cereal crops but remains completely invisible at ground level. This phenomenon occurs when buried archaeological features affect crop growth, creating patterns that can only be detected from above.

The site was first identified through aerial photographs taken by the Geological Survey of Ireland on 16 April 1974, revealing what appears to be a significant historical feature hidden beneath the modern agricultural landscape. Just 20 metres to the west lies a moated site of remarkably similar dimensions, suggesting these two features may have been connected or served complementary purposes during their period of use. Moated sites, which typically date from the medieval period in Ireland, consisted of farmsteads or manor houses surrounded by water-filled ditches that served both defensive and status-symbol purposes.

Adding to the archaeological complexity of the area, a field system has been identified adjacent to the southwest of the cropmark. These ancient field boundaries, now long vanished from the surface, hint at centuries of agricultural activity and land management in this part of Tipperary. The combination of the moated site, the mysterious rectangular cropmark, and the surrounding field system creates a fascinating palimpsest of rural Irish history, preserved not in stone or earthworks but in the subtle variations of crop growth visible only from the sky.