Bromo Volcano in East Java, Indonesia erupted on June 8, 2004. Monitoring of activitty of the volcano has been continuously done since early 1989 by using seismic observation. Four GPS observations for detection of ground deformation have also ben conducted after an eruption in December 2000. Base on Epoch-by-Epoch Technique.
Sinabung Volcano is located in North Sumatra with 2,460 meters high above sea level. This volcano was originally classified as type B volcano, but then classified as type A volcano because is is re-active on 29 August 2010.