Mudrik R. Daryono’s mind had been filled with questions ever since the magnitude 7.4 earthquake struck Palu, Central Sulawesi, on September 28. The quake was centered inland near Sirenja, Donggala Regency, about 80 kilometers Northwest of Palu, in a depth of 11 kilometers. He wondered, could this be the massive earthquake once predicted to shake Palu based on the calculation of earthquake repetition in the Palu-Koro fault?

Initially, Mudr