This is a sheela-na-gig, a category of medieval stone carving found across Ireland and Britain, typically depicting a female figure explicitly exposing her genitalia. The purpose of such carvings remains debated, with theories ranging from apotropaic protection against evil to fertility symbolism or moral warning, but whatever their original function, they were almost always associated with ecclesiastical or defensive architecture. The Hollymount example is a full-figure carving: her cone-shaped head, disproportionately large relative to the rest of the body, is rendered in high relief, while the torso and splayed limbs are carved at lower relief against a flat, punch-dressed surface. Almond-shaped eyes, a ruled nose, a single incised line for a mouth, and two small circular indentations for ears compose the face. Her arms bend sharply at the elbows, curving inward so that the fingers, carefully delineated, hold her deeply indented genitalia open. The triangular feet point upward, the legs spanning almost the full width of the stone.

The figure has not always stood here. An inscription in the concrete at the stone's base records that it was moved to this location in 1993, having been found among old farm buildings in Lehinch Demesne, some distance away. That provenance points toward a more significant past. The Strafford Inquisition of County Mayo, a seventeenth-century survey of land ownership, lists the moiety, meaning half-share, of the castle town and lands of Lehinch, suggesting a substantial medieval settlement in the area. The exact locations of that castle and its associated deserted settlement are no longer known. A separate castle recorded in neighbouring Knockalegan townland, noted on the 1837 Ordnance Survey six-inch map as a ruin and by 1930 reduced to a site, lies just east of Lehinch Demesne, and either structure is considered a plausible original home for the carving. Sheela-na-gigs were frequently embedded in the walls of castles and churches, meaning this small figure almost certainly once watched over a doorway or gateway long since collapsed into the ground.