Doesn't have to be Atlantis or Lemuria. Just a scientific doc about how cavemen lived, about their culture, technology, etc.

There have been several shows on History and Discovery channel, Walking with Cavemen was one that I recall.

Hit up utube for that sort of stuff...im sure youll find what your looking for.

See the movie 10,000 bc.... it explains the building of the pyramids, and how our true gods are aliens which control our race and development with their advanced technology.