Typically roofed with large flat cap stones and used for storage, refuge, or concealment, souterrains are fairly common companions to cashels, the circular stone-walled enclosures that served as farmsteads and defensive structures throughout the early medieval period. What makes this one quietly strange is how little of it can actually be read. It measures roughly four metres long, just under a metre and a half wide, and just over a metre deep, oriented east to west, with three clear sides cut from the rock. The fourth side, the western end, disappears into dense vegetation, and whether it terminates there or continues further underground remains unknown.