| 1997 | Evidence of trepanation |
- A 7,000-year-old burial at Ensisheim, in the French region of Alsace, has yielded the earliest unequivocal evidence for trepanation, according to Kurt W. Alt of Freiburg University and his colleagues. Trepanation is a surgical operation that involves the removal of a rectangle or disk of bone from the cranial vault.
