Just over the ridge from the theatre are the old stone quarries (latomie). While today there is a delightful, fragrant lemon orchard, they used to serve a different, more sinister purpose: 7,000 Athenian prisoners of war were kept here after the Sicilian Expedition in 413. Of most interest is the famous “Ear of Dionysius”, a 20m-high, slender pointed arch cut into the rock face that develops inwards for about 65m. The name was given by Caravaggio during his visit in 1608 and legend would tell us that it was used by Dionysius the Tyrant as a prison for his bitterest enemies. The excellent Cathedral-like acoustics meant that he could hear their conversations from outside.