Ключевые слова: abstract, africa, arid, barkhan, beautiful, blue, chad, coastline, color, desert, dune, ennedi, erg, geology, green, heat, heritage, hill, horizon, lake, landscape, mountain, natural, nature, oasis, orange, ounianga, outdoor, panorama, pink, plateau, pond, red, reflection, rock, sahara, saline, scenery, scenic, serir, shadow, sky, sunny, tchad, teli, travel, unesco, valley, view, water,