Hachijōjima Island has two mountains-Mt. Higashi, which has a complex shape, and Mt. Nishi, which is shaped like Mt. Fuji. Mt. Nishi, also known as Hachijō-Fuji, is the tallest mountain among the Izu Islands. An incident of an eruption in 1605 (the tenth year of Keichō), which caused great damage to village on the foot of the mountain, is kept in a remaining record.