Genesis 11:1-2

Some of the Hamites migrated "east" (specifically southeast) to the plain of Shinar (cf. Genesis 10:10). This was in the Mesopotamian basin (modern Iraq).

"In light of such intentional uses of the notion of ’eastward’ within the Genesis narratives, we can see that here too the author intentionally draws the story of the founding of Babylon into the larger scheme at work throughout the book. It is a scheme that contrasts God’s way of blessing (e.g., Eden and the Promised Land) with man’s own attempt to find the ’good.’ In the Genesis narratives, when man goes ’east,’ he leaves the land of blessing (Eden and the Promised Land) and goes to a land where the greatest of his hopes will turn to ruin (Babylon and Sodom). [Note: Idem, "Genesis," p. 104.]

"Following the Ararat departure, the people migrated southeast to the lower Euphrates valley. Genesis 1-11 then has come full circle from ’Eden’ to ’Babel,’ both remembered for the expulsion of their residents." [Note: Mathews, p. 467.]