This is a page from the Catalan Atlas of 1375 by Cresques Abraham. He was a Jewish manuscript artist and mapmaker, commissioned by Prince John of Aragon to create a set of nautical charts that would cover lands beyond the typical medieval Mediterranean portolan charts (navigational maps for ships).
This page shows part of northern Africa, and features prominently the king of Mali, Musa Keita I, holding a gold coin, a reference to his distribution of gold to the poor along the route of the Hajj, his pilgrimage journey to Mecca. Timbuktu is indicated to his left, by a building with the label "Tenbuch".
Image from Bibliotheque Nationale de France