Mexican experts have discovered some small, previously hidden figures in a Mayan mural while carrying out restoration work on it, the National Anthropology and History Institute, or INAH, said. Figures representing the heads of three men were found during the treatment being given to the Murals of Bonampak at the like-named archaeological site, located in the Lacandona jungle in the southern state of Chiapas, that dates back to the year 790 A.D. Further information about the diminutive figures has not yet come to light, the INAH said. At the same time, the iconography of two images painted on the upper...