Carved into an upper quoin on the south face of the hall of the Vicars Choral, a sheela-na-gig lies on its side, worked into the stonework at a corner of the building's east gable. A sheela-na-gig is a carved female figure, typically exhibiting an exaggerated or exposed vulva, found on medieval churches and castles across Ireland and Britain. Their purpose remains debated: protective talisman, warning against lust, pre-Christian fertility symbol absorbed into Christian architecture. Whatever the original intention, they are rarely placed somewhere as conspicuous as a major archiepiscopal complex, which makes this one quietly curious.

The carving measures 0.45 metres in height and is described as contemporary with the hall of the Vicars Choral itself, a building attributed to Archbishop Richard O'Hedian, who held the see of Cashel from 1406 to 1440. The figure has a roughly round head with small eyes, a large nose, and a horizontal slit for a mouth, with no neck separating head from body. The squatting posture is typical of the type: square shoulders or arms bent at the elbow, legs bent and spread to expose the vulva, feet turned outwards. What makes its placement particularly odd is that it sits not in some obscure recess but on an outer corner of a building designed to house the Vicars Choral, the clerics responsible for maintaining the cathedral's daily liturgy. Whether its orientation on its side was always intentional, or the result of later repositioning, is not recorded.

The figure sits high enough on the building that visitors standing below may struggle to make it out without knowing exactly where to look. It is on the south face of the south-east angle of the east gable, which is to say: approach the hall from the south and scan the upper stonework at the far right corner. The Rock of Cashel is managed as a public heritage site, and the hall of the Vicars Choral is among the structures accessible to visitors within the complex.