Ключевые слова: autumn, autumn leaves, autumn leaves picking, background, background material, beautiful, blue sky, bright, cedar, cedar forest, clear, clear sky, climate, eco, environment, environmental problem, fallen leaves, forest, ginkgo, hiking, image, japan, landscape, leaf, maple, material, mountain, mountain climbing, mountain range, mountain trail, natural energy, nature, no people, outdoors, plants, red, refreshing, sky, sun, sunbeams, sunlight, sunny, sunshine, tree, trees, woods,