But I am not suggesting the glaciers ran over them, so it's not a matter of migrating out of the way.
I meant in a sort of 'so to speak' way. Being hunter gatherers I would think that they were adept at following the food. If the food supply is moving over the course of decades I would think that they would have simply followed along. As the glaciers advanced both the food and the people would have been concentrated I guess. Still a pretty big area.
Is it odd that there should only be a population of about 10k of them if they were around for 370k yrs? Maybe they just weren't all that good at surviving.