Volcanological Survey of Indonesia is the official Indonesian government body responsible for investigating, recording, and warning about volcanoes within the Indonesian region of responsibility.
The full official Indonesian name is the Pusat Vulkanologi dan Mitigasi Bencana Geologi (English: Centre of Vulcanology and Geological Hazard Mitigation), often abbreviated to PVMBG. The Centre is based in Bandung in West Java.
References
Volcanological Survey of Indonesia Wikipedia(Text) CC BY-SA