Radially arranged nepheline crystal aggregates can be found in some of Nyiragongo´s lavas. The very low silica content of the volcano´s magmas is the reason why they have such a low viscosity, making them some of the fastest moving and hence deadliest lavas on earth. Minerals crystallising from such magmas are hence also silica poor, for example the white feldspathoids shown in this image. (Photo: Ingrid Smet)
Ambrym+Yasur volcanoes in Vanuatu An adventurous expedition to some of the most spectacular and active volcanoes in the world! Our volcano expedition to Vanuatu lets you spend 1 week on Ambrym with its multiple active lava lakes and 4 days on Yasur, famous for its spectacular fireworks. Guided by professional volcanologist, small groups (May-Sep).
Walking & Study tours VolcanoDiscovery's signature tours for small groups: Discover volcanoes and volcanic areas from close with an expert in their field! These tours have a broad mix of activities and interests from photography, walking, study travel, nature & culture.
Batu Tara photos A remote island in the Flores Sea of Indonesia formed by a single volcano that has been in strong strombolian eruption for years. We regularly lead expeditions to there where we camp several days to observe it.
Volcano Calendar 2018 We're proud to present our 2018 volcano calendar: 13 different and attractive images of volcanoes, volcanic landscapes and phenomena taken during volcano tours over the past few years.
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