Hanno the Navigator (Annôn, meaning "merciful" or "mild" in Punic) is called so to distinguish him from the more famous but later Carthaginian Hanno the Great. Hanno the Navigator is said to have inscribed his account of the voyage on a tablet that was hung up in the temple of Melkart (whom Greek writers assumed was an equivalent of Cronos) on his return to Carthage. What is generally supposed to be a Greek translation of this is still extant, under the title of Periplus, although its authenticity has been questioned.
Some interpreters judge Hanno to have advanced beyond Sierra Leone as far as Cape Palmas, partly because of his description of the sun rising and setting in the northern part of the sky—a detail Greek geographers found ludicrously impossible. On the island which formed the terminus of his voyage the explorer found a number of hairy women, whom the interpreters called Gorillas.
The full Greek title is The Voyage of Hanno, commander of the Carthaginians, round the parts of Libya beyond the Pillars of Heracles, which he deposited in the temple of Cronus. It was known to Arrian, who mentions it at the end of his Anabasis of Alexander VIII (Indica):