Earth ChangesPhilippines back-to-back eruptions: Mayon unleashes fast-moving avalanche of hot rocks; Kanlaon shoots ash plumes Posted on May 26, 2026 by Administrator Manila: Two volcanoes are making back-to-back eruptions in Philippines in the last two days. The restive Mayon Volcano in eastern Philippines sent a fast-moving avalanche of hot gas, ash, and fragmented volcanic rock cascading down its slopes on Friday, according to the Philippine Institute of Volcanology and Seismology (Phivolcs). The agency said the event was a lava-collapse pyroclastic density current (PDC) — one of the most dangerous volcanic hazards during eruptions.