5 metres across whilst the base spans a substantial 37 metres in diameter. The structure represents a classic example of a Norman motte, complete with defensive features including a low bank encircling the summit, a broad fosse or defensive ditch measuring 6.5 metres wide around the base, and traces of an external earthen bank visible from the southwest round to the northeast.

This fortification served as the heart of the original Manor of Cloncurry, which was granted to Adam de Hereford sometime before 1176. By 1304, however, the site had clearly seen better days; a contemporary survey described it rather bleakly as 'a moat on which is situated a one roomed building with a wooden roof, which is not vaulted as no one is interested to rent'. This vivid description offers a rare glimpse into the declining fortunes of what was once an important Norman stronghold.

The strategic placement of the motte is worth noting; it was constructed close to the highest point of a ridge, positioned downslope from the local church. This location would have provided excellent views of the surrounding countryside whilst maintaining proximity to the religious centre of the community. Today, the earthwork remains a striking reminder of the Norman influence on the Irish landscape, its imposing form still dominating the local topography nearly 850 years after its construction.