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.
Kurikoma volcano is a complex stratovolcano cut by a 4 km wide caldera located in northern Honshu, Japan. It contains the Tsurugi-dake lava dome, a central post-caldera cone, known as the site of former sulfur mining.
Minor phreatic eruptions have occurred in historical time from the central cone.
Blue flames of burning sulfur: Ijen volcano in East Java has one of the most impressive sulfur deposits on earth. They are so hot that the sulfur often ignites - a mysterious display at night caught on camera.
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