Researchers from Stockholm University and the Cultural Heritage Foundation have found human skulls mounted on stakes, at the Kanaljorden excavation site in Sweden.
The burial site is 8,000 years old and has been under investigation since 2009. All of the nine adult skulls were hit with a blunt object prior to death.
In one case the wooden spike was still sticking out of the cranium. The stakes were inserted through the large oval opening at the bottom of the skull reaching through the top.
Picture source: NobbiP