To add to your comment, this is one of the examples I still remember from reading parts of the Histories: "As for Libya [Africa, apparently], we know it to be

To add to your comment, this is one of the examples I still remember from reading parts of the Histories: "As for Libya [Africa, apparently], we know it to be washed on all sides by the sea, except where it is attached to Asia. This discovery was first made by Necos, the Egyptian king, who on desisting from the canal which he had begun between the Nile and the Arabian gulf, sent to sea a number of ships manned by Phoenicians, with orders to make for the Pillars of Hercules [the strait of Gibraltar], and return to Egypt through them, and by the Mediterranean. The Phoenicians took their departure from Egypt by way of the Erythraean sea, and so sailed into the southern ocean. When autumn came, they went ashore, wherever they might happen to be, and having sown a tract of land with corn, waited until the grain was fit to cut. Having reaped it, they again set sail; and thus it came to pass that two whole years went by, and it was not till the third year that they doubled the Pillars of Hercules, and made good their voyage home. On their return, they declared- I for my part do not believe them, but perhaps others may- that in sailing round Libya they had the sun upon their right hand. In this way was the extent of Libya first discovered." So Herodotus passes on us a piece of information he doesn't understand or believe in, but that seems to prove that the circumnavigation of Africa actually happened because the sailors, having passed the equator, kept seeing the sun on their right side at midday- since they were moving clockwise around the continent. Shivers :)