![section of ruined wall amongst sand dunes in the sahara desert at Douz Tunisia as the sand dunes encroach human settlement in desertification Stock Photo - Alamy section of ruined wall amongst sand dunes in the sahara desert at Douz Tunisia as the sand dunes encroach human settlement in desertification Stock Photo - Alamy](https://c8.alamy.com/comp/AATWMP/section-of-ruined-wall-amongst-sand-dunes-in-the-sahara-desert-at-AATWMP.jpg)
section of ruined wall amongst sand dunes in the sahara desert at Douz Tunisia as the sand dunes encroach human settlement in desertification Stock Photo - Alamy
![North Africa's great walls of sand, by Rémi Carayol & Laurent Gagnol (Le Monde diplomatique - English edition, October 2021) North Africa's great walls of sand, by Rémi Carayol & Laurent Gagnol (Le Monde diplomatique - English edition, October 2021)](https://mondediplo.com/local/cache-vignettes/L890xH557/lmd_1021_05-_carte_murs_de_sable___v5_copie_-rgb-259ea-47420.jpg?1632996632)
North Africa's great walls of sand, by Rémi Carayol & Laurent Gagnol (Le Monde diplomatique - English edition, October 2021)
![Trump told Spain to 'build a wall' across Sahara desert to solve migration crisis, minister claims | World News | Sky News Trump told Spain to 'build a wall' across Sahara desert to solve migration crisis, minister claims | World News | Sky News](https://e3.365dm.com/18/09/2048x1152/skynews-sahara-desert-generic_4427383.jpg)
Trump told Spain to 'build a wall' across Sahara desert to solve migration crisis, minister claims | World News | Sky News
![Dunes on the Outskirts of Sahara Desert. Sand Wall with Beautiful Textures. Monochromatic, Black and White. Morocco, Africa Stock Image - Image of majestic, form: 131976687 Dunes on the Outskirts of Sahara Desert. Sand Wall with Beautiful Textures. Monochromatic, Black and White. Morocco, Africa Stock Image - Image of majestic, form: 131976687](https://thumbs.dreamstime.com/b/visible-interesting-textures-patterns-sand-surface-beautiful-shapes-dunes-play-shadows-lights-sand-wall-131976687.jpg)