真実の口
La Bocca della Verità, or The Mouth of Truth, is a gigantic marble mask that can be found in the Basilica of Saint Mary in Cosmedin, located in Rome, Italy. It depicts a bearded face with open eyes, nostrils, and mouth carved into the marble.

"Wikipedia article":https://en.wikipedia.org/wiki/Bocca_della_Verit%C3%A0
bocca della verita