Ключевые слова: bulgaria, destination, ecology, environment, formation, hill, kocherinovo, kyustendil region, landmark, landscape, mountain, natural, nature, outdoor, outdoors, panorama, panoramic, park, pyramids, reserve, rila, rila mountain, rock, scenic, scenics, season, sight, sightseeing, spring, stob, stone, tourism, tranquil, travel, tree, water, wilderness, wind, yellow,