The substantial limestone structure, built from roughly coursed rubble, measures approximately 3.5 metres high and 1.5 metres thick, though only about 45 metres of its original length survives today. This imposing wall projects from the western end of a tower house that has seen considerable modification over the centuries, with the land rising to the northwest whilst sloping gradually southward.

The wall likely formed part of a bawn, a fortified enclosure that would have protected the tower house and its inhabitants during the plantation era and beyond. These defensive structures were common throughout Ireland from the 15th to 17th centuries, serving as both status symbols and practical fortifications for Anglo-Irish and Gaelic families alike. The location at Castlepark would have been strategically chosen; the elevated position offers commanding views eastward across the river towards Golden village, providing early warning of any approaching threats.

Whilst no other traces of the bawn remain visible above ground, the surviving section hints at what would have been a formidable defensive complex. The tower house itself, though much altered from its original form, would have served as the last line of defence if the bawn walls were breached. Archaeological surveys might yet reveal more of the bawn’s original footprint beneath the soil, potentially uncovering evidence of corner towers, gates, or domestic buildings that once stood within the protective walls.