Phivolcs Logs 317 Rockfalls, 222 Volcanic Quakes Over Mayon Volcano
Legazpi city: The Philippine Institute of Volcanology and Seismology (Phivolcs) on Thursday reported heightened activity at Mayon Volcano, recording 222 volcanic earthquakes, 317 rockfall events, and 63 pyroclastic density currents (PDCs), locally kno…