Indonesia is known for deadly earthquakes , primarily the 2004 Indian Ocean earthquake and tsunami , which killed more than 227,000 people . Earthquakes along the subduction zone at Sunda and on the Great Sumatran fault pose a serious threat to life , especially in the form of tsunamis . A 2005 study found that stress on at least these two zones was at a heightened level , and both have been active . The Sunda Trench zone has since produced the 2006 Pangandaran earthquake and tsunami , while the Great Sumatran fault has not produced an earthquake since the 2004 event
2006 Pangandaran earthquake and tsunami
2006 Pangandaran earthquake and tsunami
1981 Irian Jaya earthquake