Mayon Volcano Update: Eruption Spews Massive Ash Cloud, Lava Fountain [Photos, Videos]

Mayon Volcano in the Philippines erupted in a massive ash cloud Monday afternoon local time, prompting the threat associated with the deadly volcano to be raised from Level 3 to Level 4 by the Philippine Institute of Volcanology and Seismology (PHIVLOCS). Effectively, that extends the danger zone to a minimum radius of 8 kilometers around the volcano, and it also means a hazardous eruption is possible within the next few days.