This grass-covered rubble heap measures roughly 26 metres east to west and 24 metres north to south, with its height varying dramatically from 1.5 metres on the northern side to 3.5 metres on the southern edge. For years, local historians believed this might be the remains of a castle constructed by O’Conor Roe in 1406, though recent research suggests that particular fortress is more likely the tower house located about 60 metres away at a nearby rath.

The mound’s irregular surface hints at its tumultuous past, and in 1987, cut stones from what appeared to be a window were discovered amongst the rubble before being carefully re-buried for preservation. Archaeological testing carried out in 2004 roughly 100 metres to the southwest in Grange townland didn’t turn up any related artefacts, leaving the mound’s exact purpose and dating somewhat mysterious.

The site forms part of a fascinating cluster of medieval structures in the area. Just 60 metres to the southeast stands a rath, whilst approximately 120 metres to the south-southwest, across a small stream, you’ll find the remains of a priory. Together, these monuments create a compelling picture of medieval life along the Ogulla River, where defensive structures, religious sites, and settlements existed in close proximity, though the exact relationship between them remains a subject of ongoing archaeological interest.