A souterrain, to use the proper term, is a man-made underground passage or chamber, typically dry-stone built, associated with early medieval settlement in Ireland and often used for storage, refuge, or both. This one is a modest oval space, measuring roughly 2.6 metres long and 1.5 metres wide, with what appears to have been a construction shaft incorporated into its southern wall. The roof has since collapsed, and two creepways, the narrow connecting passages that link one chamber to another in these structures, lead off to the north and east but are no longer accessible.

The site was recorded in the 1750s, a detail noted by Ó Máidín in 1958, which places its documented history well before the era of formal archaeological survey. That it was considered worth noting in the eighteenth century suggests it was at least partially visible then, even if its condition has deteriorated since. Its proximity to the medieval cathedral of St. Fachtna, one of the older ecclesiastical sites in West Cork, raises quiet questions about the broader character of this townland in earlier centuries, though the relationship between the souterrain and any surrounding settlement remains unresolved in the available record.