kamuishu island in lake mashu

kamuishu island islet lava dome lake mashu akan national park crater caldera water landscape wetland atosanupuri atsosa nupuri color colors colour colours cone cones endorheic forest fresh freshwater hokkaido islands islets japan lakes landscapes mashuko scene scenery scenes scenic stratovolcano stratovolcanoes tree trees volcano volcanoes wetlands wood woodland woods mashu park hokkaido