I remember Erich von Däniken expressing surprise in one of his books in the 70s, that ancient people were able to paint such accurate representations of the human skeleton thousands of years before X-rays were discovered!
November 07, 2013
I remember Erich von Däniken expressing surprise in one of his books in the 70s, that ancient people were able to paint such accurate representations of the human skeleton thousands of years before X-rays were discovered!