Restive Mayon Volcano continues to shed pyroclastic density currents (PDC), locally known as “uson,” and rockfalls down its Mi-isi, Bonga, and Basud gullies, forcing 1,508 families in 14 barangays to seek safety, the Philippine Institute of Volcanology and Seismology (Phivolcs) reported on Wednesday, Jan. 21. (Video courtesy of DOST-PHIVOLCS)
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