Over 300 families were forced to leave their homes after a sudden collapse of built-up lava on Mayon Volcano's slopes sent ash into nearby areas.
According to the Philippine Institute of Volcanology and Seismology, massive lava deposits cascaded down in a pyroclastic flow on Saturday, but there was no explosive eruption.
No deaths or injuries were reported, but 87 villages in three towns were affected, causing poor visibility and damaging vegetable farms.
Mayor Caloy Baldo of Camalig town said the ashfall was 'just so thick' and advised villagers to calm down.
A cleanup is underway in the town, which has a population of 8,000 people in Albay province.
The 2,462-metre volcano is one of the Philippines' top tourism draws, but it's also the most active of the country's 24 volcanoes.
