Geography of Indonesia is dominated by volcanoes that are formed due to subduction zones between the Eurasian plate and the Indo - Australian plate . Some famous for its volcanic eruptions , such as Krakatoa , whose eruption impact globally in 1883 , Lake Toba eruption is estimated Supervulkan occurred 74,000 years before present which caused the volcanic winter for six years , and the eruption of Mount Tambora with the most severe ever recorded in history in 1815 .
Volcanoes in Indonesia are part of the Pacific Ring of Fire . 150 entries in this list are grouped into six geographical regions , four of which have a volcano in the Sunda Arc lineup . Two other areas include a volcano in Halmahera , including volcanic islands in the vicinity , as well as volcanoes in Sulawesi and Sangihe . The last region to be in a volcanic arc volcanoes Philippines .
The most active volcanoes are Kelut and Merapi on Java , which is responsible for thousands of deaths due to eruptions in the region . Since the year 1000 AD , Kelut has erupted more than 30 times , the most powerful 5 Volcanic eruption explosivity index ( VEI ) , while Merapi has erupted more than 80 times . International Association of Volcanology and Chemistry of Earth Interior named Merapi as a Decade Volcano since 1995 because of this volcanic activity is very high
Until 2012, Indonesia has 127 active volcanoes with about 5 million inhabitants residing in the vicinity . Since December 26, 2004 , after a massive earthquake and tsunami , volcanic eruption all patterns change , such as Mount Sinabung , which last erupted in the 1600s , but suddenly active again in 2010 and erupted in 2013 .
Volcanoes in Indonesia are part of the Pacific Ring of Fire . 150 entries in this list are grouped into six geographical regions , four of which have a volcano in the Sunda Arc lineup . Two other areas include a volcano in Halmahera , including volcanic islands in the vicinity , as well as volcanoes in Sulawesi and Sangihe . The last region to be in a volcanic arc volcanoes Philippines .
The most active volcanoes are Kelut and Merapi on Java , which is responsible for thousands of deaths due to eruptions in the region . Since the year 1000 AD , Kelut has erupted more than 30 times , the most powerful 5 Volcanic eruption explosivity index ( VEI ) , while Merapi has erupted more than 80 times . International Association of Volcanology and Chemistry of Earth Interior named Merapi as a Decade Volcano since 1995 because of this volcanic activity is very high
Until 2012, Indonesia has 127 active volcanoes with about 5 million inhabitants residing in the vicinity . Since December 26, 2004 , after a massive earthquake and tsunami , volcanic eruption all patterns change , such as Mount Sinabung , which last erupted in the 1600s , but suddenly active again in 2010 and erupted in 2013 .