upper course (not to be confused with the homophonously named Ōi River (大井川, Ōi-gawa), further to the east in Shizuoka Prefecture), the Hozu River (保津川...

Water Enshunada Sea Shizuoka Prefecture Steam locomotives of Ōigawa Railway (大井川鉄道のＳＬ) Transport/Industry Kawanehon (Honkawane) Shizuoka Prefecture Wild birds...