Ключевые слова: abstract, abstract background, background, beautiful, blue, chiang rai, cloud, clouds, color, country, countryside, day, ecology, environment, field, forest, fresh, freshness, grass, green, high, highlands, hiking, hill, land, landscape, line of sight, mountain, natural, nature, outdoor, peak, phu chee fa, plant, rock, rural, scene, scenery, scenic, sky, skyline, slope, stone, summer, sun, thailand, tour, tourism, travel, tree, trip, ukraine, valley, view, wild,