As usual, however, in these investigations, the purely archæological evidences throw light on the settlement of the Hittites long before the earliest literary allusions. The mound of Sakje-Geuzi,[714] at the southern foot of Taurus, illustrates the development of local culture during a continuous occupation of the site throughout a period which is not overestimated as beginning before 3000 B.C. and lasting down to the time of Assyrian domination. We have already seen that the earliest settlers shared some features of their neolithic culture in common with Susa on the one hand and the Troad and even Crete on the other.[715] Was all western Asia and the Ægean infused with a common germ of civilisation in those days, or was this settlement in remote antiquity an incident in a migration from one point to the other? Unfortunately we have no collateral evidence as to the plateau of Asia Minor to help in answering these questions; yet if the Hittite culture had taken root in the north of Syria before the second millennium B.C., it may readily be believed that it had been planted equally long upon the tableland, where in historic times its chief power is found. The high standard of Hittite culture, as revealed by their own archives and monuments at the dawn of their history in the fourteenth century B.C., argues in itself a long period of settlement and development under civilised conditions; while a long contact with the culture of the Euphrates valley is indicated also by the fact that their earliest international correspondence was conducted in the Assyro-Babylonian language, while their scribes had sufficient intimacy with the cuneiform system of writing to be able to apply it to their own language, which was radically different. The great deities of the Hittite pantheon also have their prototypes in Babylonia.