According to NBC News and the AP, on 8/20/15, archaeologists discovered racks known as “tzompantli” were where Aztecs displayed the severed heads of sacrificial victims on wooden poles pushed through the sides of the skull. This was different since the skulls were arranged in a circular pattern and were mortared together.
The image is of a Mayan, not an Aztec tzompantli
About me: Sean McClure is currently a Federal Employee with over 15 years of experience working at the White House, Department of the Treasury, USAID, and Department of State. He has traveled extensively to 35 countries in Africa, Asia, Latin America and Europe.