22 Nov. 07: a sudden explosion throwing out a mix of rocks and ash interrupts the calm sequence of ash eruptions. These more violent explosions occurred at intervals ranging from 1 to 15 minutes, often in series of 2 or 3 in a row and usually after a slightly longer repose interval than the typical ash venting eruptions. (Photo: Tom Pfeiffer)
Desert, Salt & Volcanoes: Experience one of the geologically most active areas on the planet: the Danakil desert in northern Ethiopia. Highlights include Erta Ale volcano with its active lava lake and Dallol hydrothermal fields offering a surreal landscape of colors, salt, geysers and springs.
Ambrym volcano photos: Ambrym (Vanuatu) is one of the most active volcanoes in the world. Its vast caldera has an amazing moonscape and several active vents that contain boiling lava lakes, most famous Marum and Benbow.
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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