lake mashu with kamuishi island

lake mashu landscape akan national park japanese white birches trees water kamuishu island trunks islet hokkaido asian birch atosanupuri atsosa nupuri betula platyphilla var japonica branch branches caldera color colors colour cone crater endorheic fresh freshwater islets japan lakes landscapes lava dome mashuko plant plants scene scenery scenes scenic stratovolcano stratovolcanoes tree trunk vegetation volcano volcanoes wetland wetlands kamuishi island park hokkaido