The next day in the evening, after Raikoke, we reach Kharimkotan, a large volcano, which forms a 8x12 km island. (Photo: Tom Pfeiffer)
More on VolcanoDiscovery:
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.
Dukono volcano photos
: Dukono on Halmahera in Indonesia has been in permanent activity for years, often producing ash plumes that drift around the northern part of the island and have become normality.
Divergent plate boundaries in oceans
: Two ocean plates move apart from each other. Hot upwelling mantle material forms magmas that continuously produce new oceanic crust. An ocean widens.