Twenty million years ago, the Izu Peninsula was an active submarine volcano at the bottom of the distant southern sea. Riding on the Philippine Sea Plate, it collided with Honshu about one million years ago, and subsequent volcanic activity formed several land volcanoes, including Mount Amagi and Daruma Mountain. The volcanic activity that created the land of Izu and the movement of the plate that transported this land from the south have brought various blessings to the peninsula, not only in the form of beautiful landscapes but also in the form of spring water, hot springs, rich fishing grounds, fertile soil, and the agricultural, forestry, and fishery products produced there. “Geo-ria” is here to help you interpret and enjoy the Izu Peninsula even more.