
The Mayon Volcano in Albay had 256 rockfall events and 41 pyroclastic density currents (PDCs) or “uson” in the past 24 hours, the Philippine Institute of Volcanology and Seismology said Sunday.

The Mayon Volcano in Albay had 256 rockfall events and 41 pyroclastic density currents (PDCs) or “uson” in the past 24 hours, the Philippine Institute of Volcanology and Seismology said Sunday.