Ключевые слова: america, american, arizona, beautiful, butte, canyon, cliff, clouds, colorado, desert, evolution, exploration, geological, grand, hike, hiking, historic, horizon, huge, indian, land, landscape, mesa, mitten, monument, national, nature, navajo, outdoor, park, peak, red, rock, sand, sky, southwest, states, surreal, tourism, travel, tribal, united, usa, utah, vacation, valley, west, western, wonder, world,