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 Volcano Discoveries: "One of the most eye-catching guides to the world’s volcanoes ever published."  VolcanoAdventures: Depuis 2005, VolcanoDiscovery propose des voyages en petits groupes, des randonnées et du trekking, ainsi que des expéditions pour voir des volcans actuellement en activité, des voyages photographiques dans de nombreuses régions d’activité volcanique à travers le monde.  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. Départs garantis:
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Actualités
lundi, nov. 02, 2015
A recent period of volcanic unrest seems to be over. Seismic activity has decreased and VSI lowered its alert level back to green (normal) last week.
[details]
Una Una volcan
stratovolcan 507 m / 1,663 ft North Sulawesi, Indonésie, -0.17°S / 121.61°E Condition actuelle: normal / en sommeil (1 sur 5) | ReportsUna Una livres
Last update: 2 nov. 2015
Style éruptif tipique: Explosive
Eruptions du volcan Una Una: 1983, 1938, 1898-1900 (?)
| Heure | Mag. / Depth | Distance | Location |
No recent earthquakes
Una Una (also known as Colo) is an isolated volcano in the Gulf of Tomni, offshore central Sulawesi. It is the site of sulfur extraction.
Introduction:Una Una volcano is a broad, low volcano containing a 2-km-wide caldera with a small central cone. Only 3 eruptions are known in historic time, but 2 of them caused extensive damage over much of the island. The last eruption of Una Una was in 1983 and produced pyroclastic flows that swept over most of the island shortly after all residents had been evacuated.
Pour accéder à la jante du Marum, nous devons d'abord faire le tour et descendre encore un peu, à la suite d'une crête dans un paysage lunaire de cendres, des ravines d'é... |
Vue de la partie sud de la caldeira avec une coulée de lave jeune (1988) visible par sa couleur brunâtre. (Photo: Tom Pfeiffer) |
  See also: Sentinel hub | Landsat 8
Plus sur VolcanoDiscovery:
 VolcanoDiscovery tours: A selection of our most popular trips, which we have been offering and improving over many years now: Stromboli & Etna, Santorini, Java, Ethiopia, Nyiragongo and more. Have a look!  Volcanoes in the Solar System: The Earth is not the only place with volcanic activity. Active volcanism also occurs at at least 3 other bodies in our Solar System.  17 days volcano trekking: This is one of our most exciting volcano tours! Halmahera, North Sulawesi and the Sangihe Islands are not only very scenic and interesting as well as nearly unspoiled by tourism, but also home to some of the country's most active (and often erupting) volcanoes, inclduing Dukono, Ibu, Lokon, Soputan and Karangetang.  Krakatoa explodes: In the afternoon of 17 Oct, a particularly violent explosion occurred at Anak Krakatau, blasting away a portion of the southern crater rim. A similar event might have been the final trigger for the catastrophic landslide that let the cone collapse and cause a devastating tsunami on 22 Dec 2018.
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