It is half a metre high, with a fosse, or defensive ditch, of the same depth cut along its southern side. On its own, that description might not seem like much. But this small linear earthwork in the townland of Garranenageevoge is protected under Irish national monuments legislation, which suggests that what looks like a modest ridge in the ground is rather older and more significant than a routine field division.

The earthwork is recorded in connection with an enclosure on the same site. It extends from the south-western bank of that enclosure and continues in a south-westerly direction, suggesting the two features were once part of the same arrangement, perhaps a boundary or outwork attached to a larger enclosed space. A bank-and-fosse combination of this kind is a common feature of early medieval Irish archaeology, where earthworks were used to define territory, protect settlements, or demarcate land with social or ceremonial significance. The fosse placed on the southern side of the bank is a detail worth noting; the choice of which side carries the ditch can sometimes indicate the direction from which a boundary was meant to impress or exclude. The monument has been subject to a preservation order since 1976, under the National Monuments Acts.