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Ancient Sumerians knew about precession too The Uruk Vase (from Wikipedia) In recent weeks I have shown how the Ancient Egyptians must have known about our ancient zodiac and precession of the equinoxes. I've now begun to look at ancient Mesopotamia. There are many obvious links between them which I'll present in the coming weeks. However, in this first look at ancient Sumer I want to focus on one of its oldest and most important artefacts, the Uruk Vase. A series of Stone-Age cultures inhabited the Euphrates and Tigris river valleys after the Younger Dryas period. This region includes much of present-day Iraq and Syria to the west of the Zagros Mountains. After the 8.2 kiloyear event archaeologists have labelled these people the Halaf, Samarra, Hassuna and Ubaid cultures, which combined take us up to around 3800 BC. After this, in southern Mesopotamia, we have the Uruk period which then takes us into Bronze Age Sumer around 3100 BC. Uruk is thought to be ...