Senegal River was known to the early Mediterranean civilizations. It or some other river was called Bambotus by Pliny the Elder (possibly from Phoenician "behemoth" for hippopotamus) and Nias by Claudius Ptolemy. It was visited by Hanno the Carthaginian around 450 BCE at his navigation from Carthage through the pillars of Herakles to Theon Ochema (Mount Cameroon) in the Gulf of Guinea. There was trade from here to the Mediterranean World, until the destruction of Carthage and its west African trade net in 146 BCE. Arab sources In the Early Middle Ages (c. 800 CE), the Senegal River restored contact with the Mediterranean world with the establishment of the Trans-Saharan trade route between Morocco and the Ghana Empire. Arab geographers, like al-Masudi of Baghdad (957), al-Bakri of Spain (1068) and al-Idrisi of Sicily (1154), provided some of the earliest descriptions of the Senegal River. Early Arab geographers believed the upper Senegal River and the upper Niger River were connected to each other, and formed a single river flowing from east to west, which they called the "Western Nile". (In fact, some of the headwaters of the Senegal River are near the Niger River in Mali and Guinea.) It was believed to be either a western branch of the Egyptian Nile River or drawn from the same source (variously conjectured to some great internal lakes of the Mountains of the Moon, or Ptolemy's Gir (Γειρ) or the Biblical Gihon stream). Arab geographers Abd al-Hassan Ali ibn Omar (1230), Ibn Said al-Maghribi (1274) and Abulfeda (1331), label the Senegal as the "Nile of Ghana" (Nil Gana or Nili Ganah). As the Senegal River reached into the heart of the gold-producing Ghana Empire and later the Mali Empire, Trans-Saharan traders gave the Senegal its famous nickname as the "River of Gold". The Trans-Saharan stories about the "River of Gold" reached the ears of Sub-Alpine European merchants that frequented the ports of Morocco and the lure proved irresistible. Arab historians report at least three separate Arab maritime expeditions - the last one organized by a group of eight mughrarin ("wanderers") of Lisbon (before 1147) - that tried to sail down the Atlantic coast, possibly in an effort find the mouth of the Senegal. Cartographic representation Drawing from Classical legend and Arab sources, the "River of Gold" found its way into European maps in the 14th century. In the Hereford Mappa Mundi (c. 1300), there