Therefore, the following cases increased gradually: Chestnut tress in the headwaters area of the Yura-gawa River, where trees grew abundantly, were cut and made into railroad ties and then floated down the Yura-gaawa River to Wachi either as individual pieces or as rafts.
そのため、樹木の豊かな由良川源流域から栗材を伐採、枕木に加工して散流（バラで流すこと）するか筏に組んで由良川を和知まで流すことが次第に増えていった。