To a passing eye it might read as a natural feature of the landscape, a slight swell in the ground given shade by a ring of trees. Locally, though, it has always been known as a lios, the Irish term for a ringfort enclosure, and that inherited name points to something older underneath the greenery.

Raths were enclosed farmsteads of the early medieval period, typically defined by one or more earthen banks and ditches thrown up around a central living area. They are among the most common field monuments in Ireland, yet many have been so thoroughly worn down by centuries of farming and weather that only the faintest traces survive. This one in Derry townland is unusually ambiguous even by those standards: described as very poorly preserved, it may have been deliberately absorbed into the working landscape at some point, its bank softened and planted to serve as a windbreak or boundary feature rather than left as a recognisable ruin. What makes the site a little more interesting is that another possible rath sits approximately 40 metres to the north-west, raising the prospect that the two once formed part of a clustered early medieval settlement, a pattern seen elsewhere in the Irish countryside where related farmsteads occupied adjoining enclosures.