Centenary of the Death of Explorer René Caillié - 90 centime

This stamp honors the centenary of the death of René Caillié (1799–1838), the pioneering French explorer who became the first European to return alive from the mysterious desert city of Timbuktu. The illustration superimposes a portrait of Caillié over a historical map of Northwest Africa, tracing his arduous 1827–1828 overland expedition from Boké through the Saharan desert up to Tangier, conveying a message of scientific curiosity, geographic discovery, and the early expansion of Western knowledge across the continent. For Mauritania, whose vast desert terrain sits at the very heart of these ancient trans-Saharan trade routes, Caillié's historical journey is deeply intertwined with the geography and regional history of the territory. Issued under the federation of French West Africa ("AOF"), this postal release highlights the era of European exploration that paved the way for subsequent colonial administrations and formal border definitions across the Saharan interior.