Ключевые слова: america, american, arid, arizona, blue, cactus, canyon, climate, day, desert, destination, dry, dune, ecosystem, erosion, formation, geology, heat, horizon, hot, journey, landmark, landscape, location, nature, outdoor, rock, sand, sandstone, scene, scenery, scenic, sky, sonoran, southwest, states, stone, summer, sun, sunset, tourism, travel, trip, united, usa, valley, vegetation, wild, wilderness,