The enclosure near Butlerstown is subcircular in shape, roughly 44 metres east to west and 40 metres north to south, and its defining bank has been so thoroughly absorbed into the landscape that it now doubles as a townland boundary hedge along part of its circuit. That administrative accident, the boundary between Butlerstown and Linziestown running along the south-western to north-eastern arc, is probably the reason any of it survives at all.

The earthen bank that defines the north-eastern to southern portion is eroded but legible on the ground: about 8.5 metres wide, with an internal height of just 0.4 metres and an external height of 1.3 metres, suggesting the interior may once have sat slightly lower than the surrounding terrain, or simply that centuries of weathering have reduced what was once a more pronounced feature. There is no visible fosse, the term for the ditch that typically accompanies such earthworks, which would originally have provided the upcast material to build the bank. Whether that ditch has silted up entirely or was never a major feature here is unclear. What does survive is a 12-metre-wide dip in the eastern perimeter, which may represent the original entrance, the point where animals were driven in or people passed through. Embanked enclosures of this type are found throughout Ireland and are often associated with early medieval farming, used to contain livestock or demarcate a homestead, though without excavation it is difficult to assign a precise function or date to any individual example.