Except an exact location is given in the original text and there's definitely nothing there. Also the text says they ruled over lands that were known to the Gre

Except an exact location is given in the original text and there's definitely nothing there. Also the text says they ruled over lands that were known to the Greeks and they have no corroboration of an earlier dominant force or advanced society. Any civilization that failed to graduate past wood and earth construction could easily be washed away. Anyone that was capable of monumental construction or even pottery should leave a trace.