Two skulls were found in Spain with holes drilled in them. The
skulls were found in a cemetery that dates to the 13th and 14th
centuries. The practice is called trepanning and goes back to
ancient times. A hole was cut into the skull of a living person
to relieve head trauma or other conditions related to the head.
It is also thought that it was done to let out evil spirits. One
of the skulls shows evidence that the patient lived a long while
after the procedure. The other person probably died soon after.
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