This rectangular enclosure, measuring approximately 70 metres from northeast to southwest and 60 metres from northwest to southeast, sits at the base of a north-facing slope with a small stream running nearby to the west. First documented on the 1839 Ordnance Survey six-inch map as a double-banked or double-moated structure, the site represents a type of fortification commonly built during the Anglo-Norman period in Ireland.

The central rectangular area, roughly 39 metres north to south and 34 metres east to west, is defined by the subtle depression of a moat that’s still visible along its southern, western, and northern sides. This moat, about seven metres wide, would have once been filled with water from the nearby stream, creating a formidable barrier against unwanted visitors. Remnants of an outer bank, also measuring around seven metres in width, can still be traced along the western edge. When viewed from above in aerial photographs taken by the Ordnance Survey Ireland in 2005, the site reveals itself as a cropmark, with both inner and outer banks clearly visible in the field patterns.

These moated sites were typically constructed by Anglo-Norman settlers or wealthy Irish families between the 13th and 14th centuries, serving as fortified farmsteads rather than full castles. The double-bank configuration at Coolroe suggests it may have been a particularly important or prosperous holding. Today, the land is used for root crops, and whilst the earthworks have been softened by centuries of agricultural activity, the essential form of this medieval stronghold remains legible in the landscape, recorded and preserved through archaeological survey work conducted by Michael Moore and others for the Archaeological Inventory of County Wexford.