Ito Jogasaki coast was formed with a lava streamed down from Mt.Omuro about 4000 years ago when it erupted and there can be seen many columner joints or sections of columner joint ( hexagonal shaped stones)
Photos: (from left)Saituna cape near Hashidate area, Oyodo-Koyodo, and the tip of Nakayama cape of Futo coast.
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