San Juan Teotihuacan, Mexico
Beyond public view, scholars unravel mystery of writing in ancient Mexican city
Close-up of three glyphs (from top to bottom) identified as the Teotihuacan's storm god with a square design near its mouth and a sign indicating the four cardinal directions, a bird with a long beak with a semicircular element possibly representing a water lily leaf, a rectangular calendric sign known as a reptile eye symbol with the number five, all dated to probably between 300-400 A.D. and found on the floor of the Plaza of the Glyphs at La Ventilla, an extensively-excavated neighborhood in the ancient ruins of Teotihuacan, in San Juan Teotihuacan, northeast of Mexico City, Mexico November 7, 2019. Picture taken November 7, 2019. REUTERS/Gustavo Graf