After undergoing silent eruptions for over a month, Mayon Volcano’s lava flows and other detached and collapsed debris have spilled over the upper slope and are no longer confined in major gullies, the Philippine Institute of Volcanology and Seismology (Phivolcs) reported yesterday. Paul Alanis, Phivolcs resident volcanologist at the Lignon Hill Observatory in this city, said the upper gullies are now full, causing lava flows and other dome-collapse debris to roll toward the middle slope. “But the good news is that these rolling volcanic materials are still converging in major gullies as they reach the middle slopes,” Alanis told The STAR yesterday.

Dematera, C., & Cariaso, B. (2023, July 24). Mayon’s lava, debris spill over upper slope. The Philippine Star, p. 10.