Particularly on the side of Kibune, there is a spot where the hill is as steep as 20 degrees or more with successive sharp hairpin curves, where a large-sized vehicle cannot make a turn at the first try.
特に貴船側は20°以上の急勾配の上、ヘアピンカーブが連続する区間があり、大型車は1度で曲がりきれないこともある。