The Ear of Dionysius (Italian: Orecchio di Dionisio) is a limestone cave carved out of the Temenites hill in the city of Syracuse, on the island of Sicily in Italy. Its name, given by the painter Michelangelo da Caravaggio, comes from its similarity in shape to the human ear. The name is also linked to the acoustic effects inside the cave: it is told that people's voices echo up to 16 times.