limestone cave ear of dionysius orecchio di dionisio with unusual acoustics - syracuse, sicily, italy

acoustic acoustics ancient antique archeological archeologico archeology cave cavern city culture del dionisio dionysius dionysus ear echoes effect entrance europe green heritage hill history inside italian italy latomia latomie legend limestone nature old orecchio paradiso park quarry rock sicilian sicily siracusa stone syracuse temenites tourism travel unusual voice