Ключевые слова: abstract, america, arid, autumn, bare, blue, bough, colorado, colors, dark, dead, dry, ecology, end, environment, forest, gebirge, lake, landscape, landscapes, leafless, lucid, mountain, mountains, national, national park, nature, outdoor, outside, park, plant, pollution, quiet, relax, relaxation, restful, sand, sea, sky, solitary, stone, texture, toter, tree, trees, usa, warming, water, wave, wood,