Ключевые слова: abstract, africa, african, canyon, chad, cliff, climatic, desert, desert landscape, desert vegetation, doyo, dune, dunes, ennedi, erg, erosion, exploring, extreme, formation, geology, gorge, hill, hot desert, labyrinth, landscape, mountain, north africa, oasis, oasis desert, panorama, panoramic, pinnacles, plateau, rock, sahara, sahara desert, sahara dunes, sahel, sand, sandstone, scenery, scenic, stone, subsaharan, the ennedi plateau, tibesti, tibesti mountains, tuareg, valley, wilderness,