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Latest VAAC alerts The Volcanic Ash Advisory Centers provide near-real time global monitoring of volcanic ash plumes for aviation. Read the latest (or browse past) advisories.
Igneous or magmatic rocks The most primitive rock type forms when magma (molten rock) solidifies - either inside the earth (plutonic rocks) or during volcanic eruptions (volcanic rocks). A short overview.
Krakatau volcano photos Hundreds of photos from active Krakatau volcano in the Sunda Strait, Indonesia. Most of them taken during our various expeditions to this fascinating volcano.
Volcano Trekking A physically active tour to visit and climb some of Indonesia's most active and famous volcanoes: Papandayan and Galunggung in West Java, Merapi in Central Java, Kelud, Semeru, Bromo, the Tengger caldera, and Ijen in East Java.
Types of tours We offer a broad variety of tours to volcanic areas: volcano expeditions and specials, discovery tours with hiking, photography, nature and culture, pilot tours and private custom tours.