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.
Nasu volcano at the northern end of Kanto Plain in central Honshu is a group of 3 larger and older and 3 smaller, young stratovolcanoes. The younger cones are called Asahi-dake, Futamata-yama, and Chausu-dake, the youngest of the volcanoes. Chausu-dake started to grow about 16,000 years ago and has had many small phreatic eruptions in the past centuries.
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