Lava flow of Hachikuboyama Volcano and lava plateau
The Joren-no-taki Waterfall is one of the largest falls of Izu Peninsula. The cascade formed at the backdrop of the lava that flowed from the Hachikuboyama Volcano. The lava created the Kayano plateau and today, a large road (Route No. 136) runs through the landscape. The flat surface was also ideal for farmlands, which prompted people to build villages around the area.
Among the cliffs on the border of the lava flow one can see “columnar joints” (rocks shaped like columns that are formed when lava cools down and contracts).