Indigenous North Americans, genetically, usually are theoried to go back 15,000 to 35,000, but some believe Indigenous North Americans go much farther back pointing that theory still can’t explain how they got here. Pan Gia is a popular assumption, but not terribly scientific and genetic archaeology has migrations north out of Africa , left at Russia and across the pond.
The Great Lakes are 2 bilkion years old. Glaciers and ocean flooding lead to their creation. A refuge between events seem to be indicated in the article. So, all’s we need to do isfind human genetic material along the refuge and compare to indigenous material along the great lakes and Indigenous North Americans can compare Indigenous Intra North American migrations based on environmental events.