The enclosure measures approximately 40 metres north to south and 43 metres east to west, and is defined by a wide fosse, that is, a ditch cut into the ground around the perimeter, running to about five metres across. It is the kind of feature that reads clearly on a map but could easily pass unnoticed on foot, especially with trees planted both inside the enclosure and along its edges, softening and obscuring the shape that the earthwork would otherwise make in the landscape.

The enclosure sits within the wider demesne associated with a 17th-century house located roughly 350 metres to the south-east. The relationship between the earthwork and that house is not established; the enclosure may predate the formal demesne layout considerably, or it may have been incorporated into it as a designed landscape feature, which was not unusual in Irish estate grounds of the 17th and 18th centuries. What is clear is that the feature was still distinct enough to be recorded on the Ordnance Survey six-inch map revision of 1945 to 1946, by which point the tree planting had presumably already been in place for some time.