Left: Skull of a man found lying prone in the lagoon’s sediments. The skull has multiple lesions consistent with wounds from a blunt implement. Right: The skull in situ.

Left: Skull of a man found lying prone in the lagoon’s sediments. The skull has multiple lesions consistent with wounds from a blunt implement. Right: The skull in situ.
http://www.cam.ac.uk/research/news/evidence-of-a-prehistoric-massacre-extends-the-history-of-warfare