Erech was a Mesopotamia city state. About 2500 B.C. the Sumerians suffered severe reverses at the hands of the northern Suites and Guites. Lagash, the Sumerian capital built on flood mounds, fell. Erech held out for thirty years after the fall of Akkad.  Noah wasn't a myth. Really lived; he was a wine maker of Aram, a river settlement near Erech.