Tower of human skulls found in chapel of Aztec god of war

An Aztec tower made up of at least 676 human skulls has been unearthed in the depths of Mexico City.

While the Aztecs were hardly known as the “shy and retiring” types when it came to war and death, this discovery is leading archaeologists to believe this ancient culture was even more brutal than previously assumed.

Within this well-known archaeological treasure chest, they recently found hundreds of skulls and thousands of fragments of bone molded into a limestone cylinder, Reuters news agency reports.

"We were expecting just men, obviously young men, as warriors would be, and the thing about the women and children is that you'd think they wouldn't be going to war," Rodrigo Bolanos, a biological anthropologist, told Reuters.

The excavation, which started in 2015, is still ongoing and continually pumping out fascinating finds.

Just last month, archaeologists working on the site also discovered an area containing an ancient Aztec temple, a ball court, and a potential sacrificial area.