look at what i came across....
There are no known Mesopotamian tales about the
end of the world, although it has been speculated that they believed that this would eventually occur. This is largely because
Berossus wrote that the Mesopotamians believed the world to last "twelve times twelve
sars"; with a
sar being 3,600 years, this would indicate that at least some of the Mesopotamians believed that the Earth would only last 518,400 years. Berossus does not report what was thought to follow this event, however
note the word 'Sars'...