Ключевые слова: africa, ajjer, algeria, arid, barren, blue, cliff, decay, desert, desolate, drought, dry, dune, environment, erosion, formation, geology, heat, hot, landscape, mountains, national, nature, parch, park, pillar, plateau, reserve, rocks, sahara, sand, sandstone, scenery, sky, stone, sunny, tassili, tourism, travel, view, waterless, weathered, wilderness, yellow,