Southern Mesopotamia, where the Tigris and the Euphrates flowed, first separately, then united, towards the Persian Gulf, was more beguiling in history than in fact. Here were Babylon and Nineveh, here Sennacherib had fought his battles, here indeed, some said, had been the Garden of Eden at the start of the world. But it was a fearful country now. .... In the summer it was indescribably hot, in the winter unbearably cold. In the dry season everything was baked like leather, in the wet season 10,000 square miles were flooded, the waters gradually oozing away to leave malodorous wastes of marsh. Fleas, sand-flies and mosquitoes tormented the place, and its inhabitants lived lives of ignorant poverty, enlivened only by sporadic excitements of crime or brigandage, the illusions of religion and the consolations of sex.Is this the land of dear old Adam (one British soldier wondered),
And beautiful Mother Eve?
If so dear reader small blame to them
For sinning and having to leave..
-- James (Jan) Morris, Farewell the Trumpets.
The garden of Eden was probably in Sundaland 8-15,000 years ago.
This is the crater that was found in the marshes when Saddam drained it. It is dated to 22-2300BC...and, I expect it along with other fragments is the source of the Soddom & Gomorra (plus other) stories recorded in the bible.