Stone Age cannibals decorated victims’ bones: A bone from the right forearm of an adult human unearthed in Gough's Cave bears more than signs of cannibalism; researchers found zigzagging cuts that were likely intentionally engraved into the bone.

See the source article by following the link below:
Stone Age cannibals decorated victims’ bones: A bone from the right forearm of an adult human unearthed in Gough's Cave bears more than signs of cannibalism; researchers found zigzagging cuts that were likely intentionally engraved into the bone.