Volcano Calendar 2019: We're proud to present our 2019 volcano calendar: 13 different and attractive images of volcanoes, volcanic landscapes and phenomena taken during volcano tours over the past few years.
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.
North Sister volcano, along with Middle and South Sister part of the Three Sisters Group in central Oregon Cascades. The group forms a prominent landmark in the Central Oregon Cascades.
North Sister is the glacially eroded remnant of a andesitic-dacitic stratovolcano, exposing the volcano's central plug.
Middle Sister volcano, also over 3000 m in elevation, is located only 2 km to the south. It is basaltic-to-rhyolitic in composition and less eroded than North Sister, but there are no known eruptions in the past 10,000 years.
Intraplate volcanism: A third tectonic setting where volcanism occurs is believed to be the result of mantle plumes and not directly related to plate boundaries. So called hot spot volcanoes fall into this category.
Dukono volcano photos: Dukono on Halmahera in Indonesia has been in permanent activity for years, often producing ash plumes that drift around the northern part of the island and have become normality.
Eyjafjallajökull volcano photos: The volcano in Iceland with the unpronounceable name... but famous in 2010 when its ash clouds drifted over Europe and forced a unprecedented large-scale airspace closure for several days, stranding millions of passengers.
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