What I would say to all of this, is that the length of time is key here. And also that the ice age, plus the jungles of more southern regions, would be excepti

What I would say to all of this, is that the length of time is key here. And also that the ice age, plus the jungles of more southern regions, would be exceptionally good at scrubbing smaller human group evidence. People have known how to salt meats essentially before modern humans. But regardless, fish keeps easily, and dried fruits and nuts are very packable, and simple to make: https://en.m.wikipedia.org/wiki/Pemmican https://en.m.wikipedia.org/wiki/Pemmican It is beyond simplistic to throw food stores on a two-pole travoline, and drag it behind you. Even more trivial to do so with a sleigh. Traveling "great distances" without food, when people can stop and fish, or hunt seal, is to me strange, especially when food stores do exist for travel. To put this another way, virtually every primitive/low tech society we have found, has shown signs of food storage. So I don't get the "but it is hard to travel" long distances argument. The artic route is just people wandering around the artic, over the pole. Again, stored food and summer temps. But that all said, I go back to the timefame. Hundreds of thousands of years, for modern humans, to make it over and over again to fresh territory. From where I sit, this timeframe alone makes a very strong argument, a third of a million years, which requires proof that it was not difficult, but literally impossible to make the trip. I would find it beyond bizarre if there were not thouands of "waves".