WATCH: Intense lahar flow was triggered by Mount Kanlaon's eruption in Sitio Mananawin Barangay Masulog, Negros Oriental, on Wednesday, June 5. | MANILA BULLETIN

As of 1:45 PM on Wednesday, Mount Kanlaon's eruption triggered lahar flow at Tamburong Creek in Barangay Biaknabato, La Castellana, Negros Occidental. PHIVOLCS advised the public to avoid the four-kilometer Permanent Danger Zone (PDZ) to minimize risks from sudden explosions, rockfall, and landslides as there could be “further explosive eruptions or even hazardous magmatic eruption.” (Facebook/Mt. Kanla-on Natural Park) RELATED: https://rb.gy/izwro9 | Philippine Star

One of the most tragic volcanic events of the 20th century occurred in Colombia, in 1985, when an eruption of Nevado del Ruiz produced lahars that swept down river valleys and destroyed communities in its path. With little warning, the volcano began erupting on the afternoon of November 13, 1985. Ash and muddy rain began to fall. Communities were alerted but no formal decision was made to evacuate. Later that evening, a stronger eruption produced pyroclastic flows and surges that mixed with snow