A drum seismograph prints real-time seismic data from monitoring stations around Mount Merapi at the office of the Geological Disaster Technology Research and Development Center (BPPTKG) in Yogyakarta on July 2, 2026. BPPTKG is the Indonesian government agency responsible for 24-hour monitoring, research and hazard mitigation of Mount Merapi. (Photo by DEVI RAHMAN / AFP via Getty Images)