WATCH: The effusive eruption at Mayon Volcano continues for the 28th consecutive day, producing incandescent lava flows, pyroclastic density currents (PDC) or “uson,” and rockfall. Lava flows have reached radial distances of around 3.7 kilometers in the Basud (east), 1.6 kilometers in the Bonga (southeast), and 1.3 kilometers in the Mi-isi Gullies, based on footage from the VMLH (Ligñon Hill) IP Camera as of February 3, 2026, according to PHIVOLCS. Alert Level 3 remains in effect over Mayon, and

WATCH: Ongoing explosive eruption at Kanlaon Volcano in Negros Island Region. | via GMA Regional TV One Western Visayas Courtesy: DOST-PHIVOLCS | GMA News

Mount Unzen is perhaps most famous for its destructive and fatal eruption on June 3, 1991 at 4:08 pm. This eruption caused the first large-scale pyroclastic flow, unprecedented at the time, which killed 43 people in the evacuation zone. Among these were French volcanologists Maurice and Katia Krafft, as well as American geologist Harry Glicken. The other forty fatalities consisted largely of those involved in the mass media, as well as firefighters, police officers, farmers and taxi drivers. | V

When a volcano erupts, pyroclastic flows are often the biggest danger to anyone nearby. These fast-flowing currents of rock, ash and hot gas are extremely difficult to study, so researchers created their own. Read the related Nature Geoscience paper here: https://go.nature.com/2Im1bYs | Nature Portfolio

This 7x-speed footage captures a massive pyroclastic flow racing down Indonesia’s Mount Semeru as the volcano unleashed a powerful eruption. | AccuWeather