[jkirsteins]

It's a good teaser for the podcast, I thought. The last episode (ep 7, which covers this topic) is more than 2 hours long. It's pretty great.

[jrumbut]

The title of the podcast, and the experience of googling some of the names in the diagram and getting sites that don't scream credibility, makes me wonder:

Does anyone know the validity of this? Can any archaeologist/historian types recommend sources?