The stone is an ogham stone, meaning it bears one of those vertical inscriptions in which the letters are formed by notches and strokes cut along a central stem line, a writing system used in Ireland roughly between the fourth and seventh centuries. The particular indignity of this one is that it was doing structural work in an agricultural building while carrying what remains of a personal name across its surface.

Exactly where the stone originally stood is uncertain. According to R. A. S. Macalister, writing in 1945, it reputedly came from the rath in the neighbouring townland of Rathmalode, a rath being a circular earthwork enclosure of the early medieval period, typically used as a farmstead. The Co. Kerry Field Club noted in 1939 a separate possibility, that it had originated at a grave-site in Lougher townland itself, though the person who supplied that information has since died and the detail could not be confirmed. The inscription, as recorded by Cuppage in 1986, reads ERCAVICCAS MAQI CO, with the final name broken off because the stone itself is broken at one end, leaving only two letters of whatever name once followed. The formula MAQI, meaning "son of" in Old Irish, is a standard feature of ogham memorial inscriptions, so the stone almost certainly once commemorated a named individual as son of someone whose name is now lost. The stone measures 1.24 metres long, 0.34 metres wide, and 0.1 metres thick.

The stone has since been moved to Musáem Chorca Dhuibhne in Ballyferriter, where it is preserved rather than pressed into service as a building component. It has also been documented through the Ogham in 3D project run by the School of Celtic Studies at the Dublin Institute for Advanced Studies, which has produced high-resolution three-dimensional scans of ogham stones across Ireland, making it possible to study the inscription in detail without handling the stone.