Lightning developing in the ash plume drifting away from the crater. (Photo: Tom Pfeiffer)
More on VolcanoDiscovery

Tours to erupting volcanoes: From time to time, we organize special tours to see volcanoes in eruption. These are often announced only few days or weeks in advance. Find out more!

Volcano and photo tour to Java, Indonesia: Visit Java's famous volcanoes: Krakatau, Merapi, Bromo, Semeru, Ijen and others, crossing Java from west to east. This study and photography trip for a small exclusive group is one of our classic and best tours.

Green Volcanoes: The Azores, a cluster of volcanic islands in the Atlantic Ocean, are famous for their very pleasant climate, breathtaking green and unspoiled landscapes and nature. They also have deep history and you'll find warm hospitality. Our new tour, guided by a photographer and volcanologist, will lead to five islands: Sao Miguel, Faial, Terceira, Pico and Flores - each with its distinct character to discover.