Hi China - I know a few years ago there was a small tribe of people discovered living in caves in the Phillippines. They were still living very primitive hunter-gatherer lives with few possessions or ornamentation. I can't remember what they were called.
I have also heard of tales of light skinned indian tribes living in South America. See
http://en.wikipedia.org/wiki/Green_Mansions
I don't know if people have actually seen them, but the art seems to reflect their existence.