While excavating a villa used by ancient Roman emperors in Italy, archaeologists uncovered something unexpected: two mosaics that depict the Greek mythological figure Medusa, whose hair was made of snakes and whose gaze was said could turn people into stone.  

The team found the mosaics in a circular room in the Villa of the Antonines, so called because it was used by members of the Antonine dynasty who ruled the Roman Empire from A.D. 138 to 193. The mosaics likely date to the second century A.D. the researchers said at a presentation at the annual meeting of the Archaeological Institute of America, which was held in New Orleans in January.