Mainstream archeologists continually underestimate early human achievements and their timing. Their are too many sites that were not made by wandering nomads.
That is a fact. Related to and from around the same time frame when early man could only “grunt at each other” to communicate. They had no “written language” do they must have only been able to grunt...
A four-holed piece of ivory provides a glimpse into ancient rope-making:
https://www.sciencenews.org/article/ancient-rope-making-tool-ivory