Ключевые слова: arid, big, canyon, cliff, cloud, colourful, country, desert, erosion, famous, formation, geological, grand canyon, highland, land, landscape, light, mountain, mountain valley, national park, natural, natural depressions, on vacation, orange, outdoor, panorama, park, rock, sand, sandstone, scenery, scenic spots, sierra, sky, stone forest, stones, summertime, terrain, the sun is shining, travel, traveling, tree, wilderness,