Very, very good book about author's 1990(?) trip from Algiers south through the Sahara desert into Niger, Mali and Senegal. He has apparently spent a fair amount of time in Algeria and had been to much of the Algerian desert prior to the trip he recounts in this book (actually, many of the anecdotes he tells are from previous trips). He nicely mixes in digressions on science (physics of sand dunes, ecology of scorpions, desertification) with his history and sociology. Langewiesche seems particularly keen to de-romanticize the Sahara, and spends a great deal of time chiding the French for doing so. A nice travel book which captures the terror of the desert quite well. I recommend not reading on once he exits the Algerian desert. He speeds through the final portion of the trip and has taken to heart the writer's adage that no ending is better than a bad ending!