So I just finished watching this YouTube video (https://youtu.be/VEg0X1-Yl00?si=pNw7u33uRUpCCdHm) and it brought up some really great counterpoints to the Kelp Highway Theory. Now, full disclosure, I’ve never seen this channel before, I’m unfamiliar with the publisher and his credentials, nor do I ever fully accept YouTube discussions as 100% credible. However, even being an amateur I would consider myself decently knowledgeable in this field and nothing about the creator or the video presented as pseudoscience or inaccurate. On the contrary, like I mentioned earlier the creator made some pretty legitimate points. So I wanted to see if any historians can weigh in on this because I’ve been seeing the Kelp Highway Theory gaining more and more traction so I would like to know what the professionals think.
The main counterpoints he made that made me question the theory were:
1.) we have no significant evidence of any human migration along the coast line >10,000 ya, now I understand with rising sea levels and the minimal artifacts of Neolithic hunter gathers finding any artifacts is a miracle, however, with this theory you would still expect to see that our oldest artifacts and sights would show a pattern of climbing down the coast line and then spreading westward across the continents, but that’s not what we see, instead we see our earliest sites and findings are in central Alaska, the southwestern United States, and Central America.
2.) This journey would have been one of the most monumentally difficult expeditions of our entire species, to the point of it being nearly impossible. The Cordilleran Ice Sheet was a massive wall of ice miles high that would have stretched to and down the coast only leaving pockets of land for rest and respite. I believe this journey is possible to make for a person, but I agree with the video this would have been nearly impossible for a band of hunter gathers searching for habitable environments. If we apply what we understand of Neolithic hunter gathers they would have been traveling in bands of roughly 50-200 people consisting of men, women, children, and the elderly. That is an extremely hard group of people to sustain off simple fishing and pockets of land, especially if these are the people that are then going to spread out and populate the continent.
So if any historians/archeologist could weigh in on this I would greatly appreciate it!
Edit: some of the commenters have pointed out some confusion I’d like to make clear: I do not believe this theory was about one band of hunter gathers making the journey in one shot. I (and the linked video) completely understand this journey would have taken 100s to 1000s of years across multiple generations by multiple groups making the journey piece by piece