...They are going to look for the highest dune so they can see all the Sahara. They walk a long time. Outka says: 'I see a high dune', and they go to it and climb up to the top. Then Mimouna says: 'I see a dune over there. It's much higher and we can see all the way to In Salah from it. So they go to it and it is much higher. But when they go to the top, Aicha says: 'Look! There is the highest dune of all. We can see to Tamanrasset.'...

(Paul Bowles, The Sheltering Sky, 1949)

-> Peter Markowich is affiliated with the institutes listed here