[Allon]

In the 1500’s, the conquistador Pizarro described the Incan rulers as “corn blond” and “whiter than the people of spain”. Interesting indeed!

http://books.google.com/books?id=Obgdz8auwkMC&pg=PA37&lpg=PA37&dq=Pizarro+%22corn+blonde%22&source=bl&ots=c4aRzUv510&sig=lOtqnvcFEz1lSdWuYX7yCSMthys&hl=en&ei=fzjgTPqZGI28sAOOvajICg&sa=X&oi=book_result&ct=result&resnum=1&ved=0CBMQ6AEwAA#v=onepage&q=Pizarro%20%22corn%20blonde%22&f=false

[blam]

Here is a link to some YouTube videos about the Chachapoyas.

[tbw2]

Inbreeding and albinism could provide partial answers.