santorini_g0274.jpg (Photo: Tom Pfeiffer)
More on VolcanoDiscovery:
Small spherical balls of volcanic ash that form from a wet nucleus falling through a volcanic ash cloud.
Volcanoes & Spices
: This 17-days adventurous expedition is one of our most exciting volcano tours! Visit Halmahera, North Sulawesi and the Sangihe Islands with some of Indonesia's most active volcanoes, including Dukono, Ibu, Lokon, Soputan and Karangetang.
Private tours on Etna volcano
: Discover Europe's largest active volcano on private, guided 1-day tours. Tours can be customized for different interests and fitness levels.
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.