Alert Level 3 was raised over Mayon Volcano in Albay due to a “high level” of unrest, with pyroclastic density currents (PDCs) recorded. But what exactly are PDCs? The Philippine Institute of ...
A large pyroclastic flow races down Mayon Volcano, sending ash sweeping across the slopes. The fast-moving surge shows why these volcanic events are so dangerous and unpredictable. It is a tense look ...
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