sai river (sai-gawa). located near daio wasabi farm in azumino, nagano prefecture, japan

agriculture asia azumi basin azumidaira azumino azuminoshi beautiful idyllic irrigation japan alps nagano naganoken old organic park prefecture relax river saigawa segi stream trees water attraction clean daio daiou farm forest gourmet green ingredient japanese landmark natural nature rural sightseeing spice tourism touristic travel traveler vacation wasabi