lake mashu in akan mashu national park

lake mashu crater water akan national park landscape hokkaido japanese white birches trees volcanoes wetland mount kamui asian birch atosanupuri atsosa nupuri betula platyphylla var japonica branch branches caldera cliff cliffs color colors colour colours crag crags endorheic fresh freshwater japan kamuinupuri lakes landscapes mashuko scene scenery scenes scenic tree volcano wetlands park hokkaido