This raised platform, which widens from 20.5 metres at its southeastern end to 28.4 metres at the northwestern edge, sits behind a defensive scarp that’s particularly pronounced on the northeastern side, where it rises 1.6 metres to compensate for the natural slope of the land. The monument first appeared on the 1838 Ordnance Survey map as an oval embanked enclosure, though by the 1920 edition it had been redrawn as a rectangular feature bordered by field boundaries.

Walking around the base of the scarp, you’ll notice a shallow depression marking the line of an external fosse, or defensive ditch, particularly visible on the southeast and southwest sides where yellow flag irises now grow in the damp conditions. The northwestern section of this fosse has been incorporated into a later field drain, measuring 2.6 metres wide and 1.3 metres deep. Beyond this drain, the ground rises slightly for about 15 metres, whilst on the southwest side, a subtle elevation hints at what might once have been an external bank, now largely levelled by time and agriculture.

The platform’s level interior bears the faint traces of cultivation ridges running north-northwest to south-southeast, suggesting the site saw agricultural use after its defensive purpose ended. The original entrance remains a mystery; whilst there appears to be a break in the fosse at the southeast corner, there’s no corresponding gap in the platform itself. This monument likely served as either a moated site or a form of earthwork castle, a theory supported by a 1720 estate map that shows a possible castle in roughly this location. Today, the best views from the site stretch to the northeast, where the ground falls away gradually, offering glimpses across the Mayo countryside.