Ah, how I miss this series.
Yes, I have seen the French version of this series and I say, they did a great job (the creators of this also did Ulysse 31 and Spartakus). Though the story was based on a Scott O'Dell novel about a boy named Esteban and Pre-American history, there are also some mythic elements too, such as a flying condor made of pure gold and the allerged civilization of Mu as well.
I wish they would have this on again, instead of that teeny-bopping B.S. or sell-out shows claiming to be "educational" Like what are kids gonna learn from all that?
But hey, I heard this was released on DVD in Europe and French parts of the world. I might nail this too *L*
P.S. My favorites are Tao and his pet parrot. They were cute!