Garden of Eden Destroyed
I have problems with both locations for the Biblical Garden of Eden in this article. According to the Bible we should not be able to find the former garden as it existed at creation, and before the Genesis Flood.
That event would have not only destroyed the garden - as it did with the rest of the world - but also buried it in some of the many rock layers deposited during the flood.
As for the idea that the Tigris and Euphrates of today are the same as before the flood, this is not taking the names of the rivers in Genesis into account. The original names given in Genesis were the Hiddekel (for the Tigris) and Perath (for the Euphrates).
This further takes away from the idea that the rivers mentioned in Genesis are the same as what we find today.
I hope that this information might help.