LIGAO CITY, Albay — Mount Mayon released new lava after superheated gas reached the crater summit, triggering the collapse of its lava dome, the Philippine Institute of Volcanology and Seismology (Phivolcs) said Wednesday. In a social media post, Phivolcs said the lava effusion occurred around 6:35 p.m. to 7 p.m. on Jan. 7. READ: Crater glow seen at Mayon Volcano Wednesday evening Video footage showed prominent pyroclastic density currents, locally known as “uson,” accompanied by crater glow—an indication that new incandescent materials surfaced and flowed toward the Bonga gully, Phivolcs added. Phivolcs said alert level 3 remains in effect over Mt. […]... Keep on reading: Mayon dome collapse releases lava, says Phivolcs