Skulls are humanity's foremost symbol of death, and a powerful icon in the visual vocabularies of cultures all over the globe.
Many strangely "deformed" hominoid skulls have been discovered in Mexico and Peru. One of them, the Starchild skull found in Mexico, is currently the subject of scientific scrutiny and DNA testing.
Thirteen crystal skulls of apparently ancient origin have been found in parts of Mexico, Central America and South America, comprising one of the most fascinating subjects of 20th Century archaeology.
Starchild skull (on the left) and the human skull (on the right)