Ключевые слова: bearing shikotsutoya national park, blue sky, boat, caldera lake, calm, chitoseshi, clear sky, cloud, copy space nature, enjoyment, float, for leisure, fun, hokkaido, holiday, japan, journey, lake, lake shikotsu, landscape, leisure, leisure boat, mountain, national park, outdoor, outside, play, recreation, relaxation, ship, sight, sky, summer, summer vacation, sunny, swan, swan boat, tourism, tourist attraction, tourist boats, travel, unfrozen lake, vacation, views, water surface, waterside,