Despite this cartographic certainty, no historical records mention any castle ever standing here, leaving the site’s true purpose shrouded in mystery. What remains today is a square grass-covered platform measuring 39 metres on each side, defined by the remnants of backfilled moats that once surrounded it.

The moats themselves, now mostly filled in, vary in width from 6 to 11 metres and retain only shallow depressions between 10 and 30 centimetres deep. These defensive features suggest the site once held some importance, whether as a fortified homestead, a manor house, or perhaps an earlier structure that predated any castle designation. Running east to west across the interior, a slight sunken channel about 8 metres wide at its base likely marks the course of an old stream that once flowed through the area.

Situated on a gentle southwest-facing slope, the earthwork presents an intriguing puzzle for historians and archaeologists. The Archaeological Inventory of County Wexford, published in 1996, catalogued this site amongst the county’s historical features, though subsequent research has added little clarity to its origins. Whether it represents the foundations of a lost medieval stronghold, a Tudor-era fortified house, or something else entirely, the so-called Haystown Castle site remains one of Wexford’s more enigmatic archaeological features.