The site sits atop a rocky pinnacle with precipitous drops to the north and south, whilst the eastern approach offers a more gradual descent. To the west, the ground falls away gently for about 20 metres before plunging steeply towards the River Moyle below. This strategic location, with a road running along the base of the northern cliff face, would have provided exceptional defensive advantages and panoramic views across the river valley to the west and southwest.

The summit itself is remarkably compact, measuring just 9 metres north to south and 4 metres east to west; dimensions that seem almost impossibly small for a castle structure. This suggests the main fortification may have extended onto the flatter, lower terrain to the west of the rocky peak. What remains visible today is a 24-metre stretch of drystone rubble walling along the northern edge of the precipice, standing 0.45 metres high and 0.7 metres wide, which runs east to west before descending towards the western end of the summit.

Historical records confirm the castle’s significance in the local landscape. It appears on the Down Survey map of 1655-6, one of the earliest systematic surveys of Irish lands, and continued to be marked on the first edition Ordnance Survey 6-inch map of 1840. These cartographic references, spanning nearly two centuries, indicate that the castle ruins remained a notable landmark long after the structure ceased to function as a defensive fortification.