The Periplus of the Erythraean Sea is a short work of uncertain date and unknown authorship, written in very difficult Greek. It is concerned with the coasts of the Red Sea and |Indian Ocean and may be described as a combined trade directory and Admiralty Handbook, giving sailing directions and information about navigational hazards, harbours, imports and exports. It is of great value for the study of the commerce of the Roman Empire and the early history of East Africa, South Arabia and India....