This substantial earthwork, marked on the 1837 Ordnance Survey Fair Plan map, takes the form of an oval mound measuring approximately 30 metres north to south and 21 metres east to west. The monument’s most striking feature is its steep scarp, which rises between 1.5 and 2.5 metres high and is ringed by a narrow ledge or platform at its base on all sides except the northern edge, where the slope becomes particularly sharp. The flat summit, spanning 21 by 13.3 metres, slopes gently towards the south, though no structural features remain visible today.

Adjacent to the eastern side of what appears to be a motte lies evidence of a crescent-shaped enclosure, measuring roughly 32.5 by 25.2 metres and defined by a low earthen bank that curves from the northwest through north, east, and south to the southwest. This secondary feature may well be the smaller rath that historian Adams noted in 1960, describing it as sitting beside “the imposing rath known as Rathmore”. Modern aerial photography from Digital Globe reveals both the substantial oval earthwork, which appears to occupy a natural terrace, and faint traces of the crescent-shaped enclosure.

The site’s strategic position and defensive features suggest it served as a motte and bailey castle, a type of fortification introduced to Ireland by the Anglo-Normans in the 12th century. An old road, located about 15 metres to the north, hints at the site’s former importance as a local stronghold. The Archaeological Survey of Ireland has documented the monument’s profile in detail, preserving valuable information about this medieval earthwork that once played a role in controlling and defending this part of Westmeath.