Ключевые слова: america, big, calm, canyon, cliff, cliffs, destination, ecology, edge, environment, forest, giant, gorge, grand, green, habitat, landmark, landscape, mountain, national, natural, nature, outdoor, outdoors, park, parkland, plant, ravine, remote, river, rock, rugged, scene, scenery, scenic, steep, terrain, tourism, travel, tree, trees, us, usa, view, water, wild, wilderness, wyoming, yellowstone, yellowstone national park,