When capacity for transport increased as a result of the excavation of the Hozu-gawa River by Ryoi SUMINOKURA, Uzune, Umaji, Hozu and Yamamoto in the Kameoka area prospered as a waypoint between Tanba and Kyoto.
角倉了以の保津川開削以後、桂川の輸送力が強化されると、丹波と京都の中継地点として亀岡市域内の宇津根・馬路・保津・山本が栄えた。