Ritual holes cut in human skulls 6,000 years ago
Holes bored in the skulls of living Neolithic people had no obvious purpose
Dr. Julia Gresky, an anthropologist from The German Archaeological Institute in Berlin, studied the 4,000 to 6,000 year-old skulls and determined that the location of the coin-sized holes would have served no medical purpose. Even though the holes were scraped or gouged with a degree of surgical precision, making them at the back of the skull would have been extremely dangerous.
Evidence of bone re-growth also suggests that most of the 13 not only survived the procedure, but lived for years after. The rituals and meaning associated with these ancient trepanations remain a mystery.