Strabo Geography 7.1.1

[1] Now that I have described Iberia and the Celtic and Italian tribes, along with the islands near by, it will be next in order to speak of the remaining parts of Europe , dividing them in the approved manner. The remaining parts are: first, those towards the east, being those which are across the Rhenus and extend as far as the Tanaïs ¹ and the mouth of Lake Maeotis, ² and also all those regions lying between the Adrias ³ and the regions on the left of the Pontic Sea that are shut off by the Ister ⁴ and extend towards the south as far as Greece and the Propontis; ⁵ for this river divides very nearly the whole of the aforesaid land into two parts. It is the largest of the European rivers, at the outset flowing towards the south and then turning straight from the west towards the east and the Pontus. It rises in the western limits of Germany, as also near the recess of the Adriatic (at a distance from it of about one thousand stadia), and comes to an end at the Pontus not very far from the outlets of the Tyras ⁶ and the Borysthenes, ⁷ bending from its easterly course approximately towards the north. Now the parts that are beyond the Rhenus and Celtica are to the north of the Ister; these are the territories of the Galatic and the Germanic tribes, extending as far as the Bastarnians and the Tyregetans and the River Borysthenes. And the territories of all the tribes between this river and the Tanaïs and the mouth of Lake Maeotis extend up into the interior as far as the ocean ⁸ and are washed by the Pontic Sea. But both the Illyrian and the Thracian tribes, and all tribes of the Celtic or other peoples that are mingled with these, as far as Greece, are to the south of the Ister. But let me first describe the parts outside the Ister, for they are much simpler than those on the other side.