Mayon is under Alert Level 3, meaning "increased tendency towards hazardous eruption". Photos by Richard Esplana

Lava flowing down the slopes of Mayon Volcano lit up the sky in Albay on Monday night.

Netizens who live near the volcano have shared their photos of the erupting volcano.

One of them is Department of Science and Technology employee Richard Esplana, who snapped the photo from Brgy. Tamaoyan in Legazpi City.

Esplana, who lives within the 10-kilometer danger zone, advised his fellow Bicolanos to tune in to government advisories and follow the precautionary measures.

Mayon is under Alert Level 3, meaning "increased tendency towards hazardous eruption," Philippine Institute of Volcanology and Seismology (Phivolcs) research specialist Paul Alanis told ABS-CBN News.

More than 12,000 residents living near the volcano have already fled to evacuation centers, according to the National Disaster Risk Reduction and Management Council.

• Thousands more evacuated as lava spreads around Mayon Volcano

Wedding videographer Ronald Rebutica, meanwhile, took a time-lapse video of the eruption as seen from Barangay Rawis in Legaspi City. Rebutica uploaded it on Facebook and received much attention from netizens.

As of this writing, Rebutica's video has already garnered 3,364 shares and over 40,000 views.

Mayon, known for its near-perfect cone, last erupted in 2014. Its most destructive eruption was in February 1841, when lava flows buried a town and killed 1,200 people.