At a site in Mexico City, archaeologists have unearthed new sections of a large Aztec "skull tower." Some 119 additional skulls were recently excavated at the location, initially discovered in a 2015 building restoration, BBC reports.
It's believed that the skulls were part of a temple dedicated to the sun god, Huitzilopochtli, and human sacrifice was part of the Aztec practice in the 15th and 16th centuries.
The cylindrical skull structure, called Huey Tzompantli, is thought to have been built between 1486 and 1502.