john wrote:

Marcel Homet was a widely-travelled doctor of
archaeology, and author whose book containing his
pictures of all the petroglyphs I read back before computer fakery.
There were plenty of pictures- see "Sons of the Sun(?)
by Marcel Homet
I'm pretty sure he showed these rocks to others who would
probably be able to determine if he had just recently carved
them with his little scout knife.
I'm sure after the effort it takes getting to some
of those places in Brazil, he would be in good enough shape to do that
after supper. As would you, I'm sure.

john

  Right!  http://ancientx.com/nm/anmviewer.asp?a=90