“Eden” could have possibly been describing the far southern tip of Africa……I forget all the technical names for everything but if I remember correctly there was a point in time where Neanderthals went extinct during a bottle neck extinction event or ice age?? and the small group of folks that modern Homosapiens descended from took refuge and survived through it on the southern tip of Africa where they lived on the coast in caves for a period of time………eventually branching back out once conditions became more favorable again in across the rest of the world…….something to that effect anyways. Somewhere in there had to be a point in time where language and more complex thought developed and that’s when “stories” began to be told about what had happened in the past.