Mount Merapi is an active stratovolcano located on the border between the province of Central Java and the Special Region of Yogyakarta, Indonesia. It is the most active volcano in Indonesia and has erupted regularly since 1548. It is located approximately 28 km north of Yogyakarta city which has a population of 2.4 million. Thousands of people live on the flanks of the volcano, with villages as high as 1,700 m above sea level.
Smoke can often be seen rising from the mountaintop, and several eruptions have caused fatalities. From Wikipedia
