"Vitis vinifera" may have been domesticated in Lebanon, although it probably arrived from the South Caucasus via Mesopotamia or the Black Sea trade routes. Vines grew readily in the land of Canaan, the coastal strip of today's Lebanon, and the wines of Byblos were exported to Egypt during the Old Kingdom (2686 BC–2134 BC). The wines of Tyre and Sidon were famous throughout the ancient Mediterranean, although not all the cargoes reached their destination; Robert Ballard of "Titanic" fame found the wrecks of two Phoenician ships from 750 BC, whose cargo of wine was still intact. As the first great traders of wine ('Cherem'), the Phoenicians seem to have protected it from oxidation with a layer of olive oil, followed by a seal of pinewood and resin—this may well be the origin of the Greek taste for retsina. The philosophers Zeno of Citium and Chrysippus of Soli are both said to have enjoyed their wine, in fact the latter died from overindulgence.