Ключевые слова: adventure, america, arid, background, beautiful, beauty, big, blue, california, color, colorful, crater, death, deep, desert, dry, formation, geological, geology, hole, landscape, national, natural, nature, nobody, outdoor, park, rock, rugged, scenery, scenic, sky, states, stunning, tourism, travel, trip, ubehebe, united, usa, vacation, valley, volcanic, western, wonder,