MANILA, Philippines — The Mayon Volcano is exhibiting signs of increasing unrest, with bright red magma and glowing pyroclastic density currents called "uson" continuing to stream from its summit as ...

A total of 133 rockfall events and 30 pyroclastic density currents (PDC), locally known as “uson,” were recorded at Mayon Volcano in Albay over the past 24 hours, the Philippine Institute of ...

Mayon Volcano in Albay continued to shed pyroclastic density currents (PDC) or 'uson' on Friday, the Philippine Institute of Volcanology and Seismology (PHIVOLCS) said. In a video taken at 9:46 p.m.