The Volcano Adventure Guide: Excellent information and background for anyone wishing to visit active volcanoes safely and enjoyably. The book presents guidelines to visiting 42 different volcanoes around the world.
Myojin Knoll volcano is a large submarine caldera between Aoga-shima and Bayonnaise Rocks volcanoes in the Izu-Bonin arc. The volcano contains a 6-7 km wide and up to 900 m deep caldera with steep walls. The highest point on the western caldera rim is a pumice-mantled remnant of the cone before the caldera formation, and reaches to a depth of 360 m. The eruption that formed the caldera could have been only a few thousand years ago.
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