Caught on Camera: Large Pyroclastic Density Current from Flow Collapse Mayon Volcano (May 13, 2026)

A lava flow collapse-fed pyroclastic density current descending the southwestern slopes of Mayon Volcano at Mi-isi Gully at approximately 11:22 AM on May 13, 2026. PHIVOLCS reported that Alert Level 3 remains in effect over Mayon Volcano, meaning the volcano is in a state of intensified or magmatic unrest. Entry into the 6-km Permanent Danger Zone should remain strictly prohibited. Pyroclastic density currents, or PDCs, are fast-moving mixtures of hot volcanic gas, ash, and rock fragments. In this case, the PDC was fed by the collapse of lava material on Mayon’s slopes, producing a dangerous ash-and-debris surge down the gully. Mayon Volcano, located in Albay, Philippines, is one of the country’s most active volcanoes and is known for its near-perfect cone shape. During periods of lava effusion, unstable lava deposits can collapse and generate hazardous rockfalls, ash plumes, and pyroclastic density currents. This footage shows why official danger zones around active volcanoes must be respected.