Alas, that's not the only explanation that archaeologists came up with. The skulls came from the oldest temple site in the world, which was active 9,000-11,500 years ago. No one seems to have lived there, it was just used for rituals. Göbekli Tepe isn't the only archaeological site to have signs of a skull cult, but this is the first time we've found evidence of how the Neoliths who lived nearby treated their dead. The findings were published in Science Advances on Wednesday. Anatolia, the region of Turkey where Göbekli Tepe is located, has plenty of sites with skull carvings and manipulations. So many, in fact, that researchers think it was a part of burial custom in that part of the world. Göbekli Tepe isn't a burial site, though. There are no mass graves. There are limestone pillars and sculptures, reliefs carved into stone, and monumental buildings.