The result is the state fiscal crises that have erupted since 1989.
It has not erupted since 1859, only an instant in terms of geological time.
It has erupted at least 22 times since 1862.
It is also the most active vent, having erupted more than 70 times since 1839, the last episode in 1973 to 1975.
It has erupted six times since the 1812 eruption; 1883, 1935, 1964-65, 1976, 1986.
However, Excelsior has not erupted since 1985, and is now classified as a hot spring.
Gaua, about 9,800 feet high, has erupted 13 times since 1963, tourism officials say.
The volcano has been erupting on occasion since October 2004.
It is the most active volcano in Indonesia and has erupted regularly since 1548.
The volcano has erupted relatively frequently since the last glacial period, most recently in 2010.