Risky skull surgery done for ritual reasons 6,000 years ago

Bone regrowth shows most survived operation to cut back-of-the-head holes

trepanated skull

RITUAL CUT  An almost 6,000-year-old human skull from southern Russia contains a large opening at the back of the head created by cutting away bone with a sharp instrument. Researchers suspect many skull surgeries in southern Russia at that time were performed for ritual, not medical, reasons.

J. Gresky

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