THIRTEEN mountains are active! The alarm signals in the control room of the Center of Volcanology and Geological Disaster Mitigation were at alert status. On computer monitors they displayed data: 13 mountains were resuming activity. It was a serious warning. The office, located on Jalan Diponegoro, Bandung, promptly announced overtime work. “The team in charge must keep a 24-hour watch,” said Surono, head of the Volcanology Center, on Thursd