@1:45
When I first saw this about 6-7yrs ago I recall the recording being claimed to be filmed around the 70's - 80's
it is now being claimed to be from 2000
so either Bielek took the population in his story from the guidestones or vise versa.
here is the full recording (long 5+ hrs)
https://www.youtube.com/watch/?v=lIjXfJ4qorA