Rohlfs map and added to our scientific knowledge of the area as well as discovered the famous rock art of Oweinat. His famous article in the September 1924 issue of National Geographic Magazine had many of the first photos of the people and landscapes. Georges Marie Haardt (1884–1932) and Louis Audouin-Dubreuil (1887–1960) [1921-1922; 1924-1925]. The first crossing of the Sahara by motor car (Citroën half-tracked vehicles) was followed by a crossing of the continent ending in Madagascar. Michael Asher (1953-) and Mariantonietta Peru (1956-) The first crossing of the Sahara from west to east by camel and on foot, from Chinguetti, Mauritania to Abu Simbel, Egypt a total distance of 4500 miles. (1986–87) William George Browne Bill Kennedy Shaw Charles-Jacques Poncet - Wikidata Q6594681 See also Desert exploration European exploration of Africa Trans-Saharan trade References Further reading Eamonn Gearon. The Sahara: A Cultural History. Signal Books, UK, 2011. Oxford University Press, USA, 2011. David W. Ball Empires of Sand, Bantam Dell, 1999. The second half of this novel details the Flatters expedition of 1881 that ended in grisly fashion for the expedition and put an end to French plans for a trans-Saharan railway Michael Asher Impossible Journey - Two Against The Sahara Penguin Books, UK 1988 Michael Asher Sands of Death - An Epic Tale of Massacre & Survival in the Sahara (on the Flatters expedition) Orion Books, 2007 History of the Sahara Explorers of Africa Sahara