In the press of November 2, 1930, Ripley published the picture of a giant skull in the Vitlen Museum, Amsterdam which is 12 inches wide at the temples and 20 inches from chin to crown, “indicating that the man was over 13 feet tall.”
This skull can be replicated by the size given, 13 feet tall is outside the norm. Giants range between seven to twelve feet normally. There has to be more information or a picture of the skull.
The Amsterdam Skull
Ripley Skull of 13 ft Giant 1930
Research done by Rephaim23