Kamojang Geysers c. 40 kms SE of Bandung, West Java. The Kamojang geothermal field is located in high volcanic terrain in West Java (Indonesia), 1500 m above sea level. It is the first operational field in Indonesia and has been producing electricity since 1983. The field lies on the Rakutak - Guntur volcanic chain. The surface manifestations, which consist of hot pools, fumaroles, mud pots and hot springs, are located in the so called Kawah Kamojang area. The major lithologies in the studied wells are andesite ash, andesite lava, andesite breccia, and andesite tuff.