LEGAZPI CITY — The Philippine Institute of Volcanology and Seismology (Phivolcs) has warned the public to stay away from river channels around Mayon Volcano after a muddy stream flow, believed to be lahar, was recorded along the Mi-isi Channel in Daraga, Albay. A resident of Barangay Salvacion, near the Mi-isi Gully in Barangay Mi-isi, captured
