sulphurous mountain valley with hot spring stream and steam at tamagawa onsen hot spring in senboku city, akita prefecture, japan

acid akita asia city cloud colorful energy flowing forest geologic geological green healing hot hut japan japanese landscape mountain nature onsen park prefecture recovery region scenic senboku sightseeing spot spots spring steam stone stream sulphur sulphuric sulphurous summer tamagawa tamagawaonsen tohoku tourism tourist tradition travel valley volcano water white wild wildlife wood yellow