紀伊水道
The Yoshino rises from Mount Kamegamori (瓶ケ森) in Ino, Kōchi Prefecture and flows to the east. In Ōtoyo it turns to the north and crosses the Shikoku Mountains. The gorge, named Ōboke Koboke, is a famous tourist attraction of Shikoku. In Ikeda, Tokushima Prefecture it turns to the east again and pours into the Kii Channel at the north of Tokushima city. Its major tributaries include Ananai, Iya, Dōzan, Sadamitsu, and Anabuki.