I have a gorgeous paper map that came in the information packet with my genographic kit.  It maps the genetic migration as the hypothesized first humans in eastern African spread out across the globe.  The migrations are mapped to the branchings of the major haplogroups.  It is both larger and more complicated than your map.

I have not been able to find that map on line.  I think it might be presented in animated form in a flash presentation on the Genographic Project website.  Viewing any kind of animation is painful if not impossible on my dialup at home, so I cannot check that just now.  I am a major map junkie, and the National Geographic folks feed my addiction with such paper maps.  Bear with me as I expose my dismal geographic skill -- go figure -- and I'll try to describe the map I have.

Beginning with a supposed first pair humans in eastern Africa, one major migration goes north across the Sinai, branching into multiple haplogroups as it goes.  One group goes north and then west across Asia Minor, terminating in what is now Greece.  Another goes a little further north and then west, terminating in what is now northern Italy.  Most of the branching groups go north and northeast.  One skirts the Indian Ocean, then turns southeast, terminating in Australia.  Another goes northeast up the east coast of Asia, across the land bridge, and terminates in the Pacific Northwest of North America.

What might be called the main branch goes further north, branching multiple times as it goes.  Most of the branches go east or northeast into Asia.  One branch goes northeast into what might be northern Iran where it branches multiple times again.  One branch goes north from there to maybe Kazakhstan, then splits into two main branches.  

Of those two main branches, one goes right up across eastern Asia, across the land bridge, and down through the Americas, terminating in what might now be southern Brazil or northern Argentina.  The other turns west and goes right across Europe and down into the Iberian Peninsula, terminating in the northwest corner of Spain.  This map doesn't show it, but it is my understanding that that migration continued into Britain and Ireland.  That is haplogroup M343, the one I belong to, and apparently share with most of the folks we think of as Europeans and Britons.  I think that haplogroup roughly corresponds to the cultural group that I have been referring generically as the Celts.

The whole thing as it happened from the first identified human haplogroup in eastern Africa to M343 arriving in Iberia spans about 50,000 years, so all of recorded history is just an afterword of sorts to the main story.  From the last major branch in central Asia to M343 is about 15,000 years, again much longer than any written history.

Geez I hope that makes some kind of sense.  And I do wish I could upload the map itself.  Like all National Geographic paper maps, it is a thing of beauty.

We all bleed the same color.