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.
Dense ash clouds are produced by vulcanian-type explosions. In this long exposure night time shot, the ash cloud is blurred against the moon-lit landscape. Bromo's Hindu temple in the foreground. (Photo: Tom Pfeiffer)
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