Mysteries of the Aztecs unearthed: 50 skulls used in sacrificial rituals found at sacred temple after lying hidden for 500 years

Mexican archaeologists have uncovered the largest number of skulls ever found in one offering at the most sacred temple of the Aztec empire dating back more than 500 years. The finding reveals new ways the pre-Colombian civilization used skulls in rituals at Mexico City's Templo Mayor, experts said. That's where the most important Aztec ceremonies took place between 1325 until the Spanish conquest in 1521. The 50 skulls were found at one sacrificial stone. Five were buried under the stone, and each had holes on both sides - signaling they were hung on a skull rack.

http://www.dailymail.co.uk/news/article-2213700/Mysteries-Aztecs-unearthed-50-skulls-used-sacrificial-rituals-sacred-temple.html