Copy form 1500 of a map drawn by the Arab geographer Idrisi in 1154. South on top. Africa is shown in the tradition of Ptolemy: The Nile flows out of two lakes, probably representing Lake Victoria and Lake Edward, and unites in a third lake, probably representing Lake Albert.
Idrisi (Arab geographer), shot &amp; upload <a href="//commons.wikimedia.org/wiki/User:Ulamm" title="User:Ulamm">Ulamm</a> (<a href="//commons.wikimedia.org/wiki/User_talk:Ulamm" title="User talk:Ulamm"><span class="signature-talk">talk</span></a>) 11:48, 1 November 2008 (UTC)
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Andreas Speer, Lydia Wegener: "Wissen über Grenzen: Arabisches wissen und lateinisches Mittelalter", 2006, Walter de Gruyter