Strabo Geography 2.5.27

[27] We will now describe separately the various countries into which it is divided. The first of these on the west is Iberia, which resembles the hide of an ox [spread out]; the eastern portions, which correspond to the neck, adjoining the neighbouring country of Gaul. The two countries are divided on this side by the chain of mountains called the Pyrenees; on all its other sides it is surrounded by sea; on the south, as far as the Pillars, by Our Sea; and thence to the northern extremity of the Pyrenees by the Atlantic. The greatest length of this country is about 6000 stadia, its breadth 5000. ¹