Ключевые слова: asia, attraction, autumn, blue, cone, conical, crater, environment, fall, geology, geomorphology, grass, halla, hallasan, hike, hill, history, holiday, island, jeju, jejudo, korea, landmark, landscape, lava, magma, mountain, natural, nature, oreum, outdoor, panorama, peak, plant, reed, relax, sangumburi, scenery, scenic, silver grass, summer, tourism, tourist, travel, tree, tuff, vacation, volcanic, volcano,