Science

Mayon Volcano Near Eruption in Philippines
Volcanologists say an eruption of the Mayon volcano is imminent, after ash explosions and dark orange lava began trickling down the mountain.

Fresh Lava Flows

Dec. 30: Lava continues to flow from the crater of Mayon volcano as viewed from Lignon Hill in Legazpi city, Albay province about 300 miles southeast of Manila, Philippines late . About 50,000 residents living around the extended 5-mile danger zone of the country's most active volcano are now housed in different evacuation centers due to its continued activity since Dec. 14, 2009.

(AP Photo/Bullit Marquez)

Lava Continues to Flow

Dec. 30: Lava continues to flow from the crater of Mayon volcano as viewed from Lignon Hill in Legazpi city, Albay province about 300 miles southeast of Manila, Philippines. About 50,000 residents living around the extended 5-mile danger zone of the country's most active volcano are now housed in different evacuation centers due to its continued activity since Dec. 14, 2009.

(AP Photo/Bullit Marquez)

Mayon Spews Ash Anew

Dec. 29: Mayon volcano spews ash anew in another mild eruption as viewed from Legazpi city, Albay province about 500 kilometers southeast of Manila, Philippines. More than 47,000 people living within a 5-mile danger zone around the volcano have fled to evacuation centers since it began spewing ash and spilling lava over two weeks ago.

(AP Photo/Bullit Marquez)

Mayon Spews Ash Anew

Dec. 29: Mayon volcano spews ash anew in another mild eruption as viewed from Legazpi city, Albay province about 500 kilometers southeast of Manila, Philippines. More than 47,000 people living within a 5-mile danger zone around the volcano have fled to evacuation centers since it began spewing ash and spilling lava over two weeks ago.

(AP Photo/Bullit Marquez)

Evacuees Scramble for Candies

Dec. 29: Mayon volcano evacuees scramble for candies being given by South Korean students at an evacuation center in Guinobatan township, Albay province about 300 miles southeast of Manila, Philippines. About 50,000 residents living around the extended 5-mile danger zone of the country's most active volcano are now housed in different evacuation centers and is likely to stay beyond the Christmas holidays since it began spewing ash and continuing lava flow Dec. 14, 2009.

(AP Photo/Bullit Marquez)

Evacuees Watch Free Films

Dec. 29: Mayon volcano evacuees are treated to a free film showing at an evacuation center in Guinobatan township, Albay province about 300 miles southeast of Manila, Philippines. About 50,000 residents living around the extended 5-mile danger zone of the country's most active volcano are now housed in different evacuation centers and is likely to stay beyond the Christmas holidays since it began spewing ash and continuing lava flow Dec. 14, 2009.

(AP Photo/Bullit Marquez)

White Ash Spews Anew

Dec. 29: Mayon volcano spews white ash anew in a mild eruption at Cagsawa, Albay province about 500 kilometers southeast of Manila, Philippines. About 50,000 residents living around the extended 8-kilometer danger zone of the country's most active volcano are now housed in different evacuation centers and is likely to stay beyond the Christmas holidays since it began spewing ash and continuing lava flow Dec. 14, 2009.

(AP Photo/Bullit Marquez)

Workers Gather Supplies

Dec. 29: A worker gathers sand and gravel from a river as Mayon volcano spews ash anew in a mild eruption at Cagsawa, Albay province about 500 kilometers southeast of Manila, Philippines. About 50,000 residents living around the extended 8-kilometer danger zone of the country's most active volcano are now housed in different evacuation centers and is likely to stay beyond the Christmas holidays since it began spewing ash and continuing lava flow Dec. 14, 2009.

(AP Photo/Bullit Marquez)

Cagsawa Ruins with Lava

Dec. 28: The historic Cagsawa ruins provides a foreground as lava flows down the slopes of Mayon volcano during its mild eruption as viewed from Cagsawa , Albay province about 310 miles southeast of Manila, Philippines. More than 47,000 people living within a 5-mile danger zone around the volcano have fled to evacuation centers since it began spewing ash and spilling lava over two weeks ago. The Cagsawa Church was buried by Mayon's eruption in the year 1814.

(AP Photo/Bullit Marquez)

Lava Flows Down Mayon's Slopes

Dec. 28: Lava flows down the slopes of Mayon volcano during its mild eruption as viewed from Daraga township, Albay province about 300 miles southeast of Manila, Philippines. More than 47,000 people living within a 5-mile danger zone around the volcano have fled to evacuation centers since it began spewing ash and spilling lava over two weeks ago.

(AP Photo/Bullit Marquez)

Fresh Lava Flows

Dec. 28: lava flows down the slopes of Mayon volcano during its mild eruption as viewed from Daraga township, Albay province about 310 miles southeast of Manila, Philippines. More than 47,000 people living within a 5-mile danger zone around the volcano have fled to evacuation centers since it began spewing ash and spilling lava over two weeks ago.

(AP Photo/Bullit Marquez)

Lava on Mayon

Dec. 28: Lava cascades down the slopes of Mayon volcano during its continued mild eruption as seen from Sto. Domingo, Albay province, about 310 miles southeast of Manila, Philippines. More than 47,000 people living within a 5-mile danger zone around the volcano have fled to evacuation centers since it began spewing ash and spilling lava two weeks ago.

(AP Photo/Bullit Marquez)

A Mild Column of Ash

Dec. 28: A mild column of ash rises from the crater of Mayon volcano as the country's most active volcano continues its mild eruption as viewed from Legazpi city, Albay province, about 310 miles southeast of Manila, Philippines. More than 47,000 people living within a 5-mile danger zone around the volcano have fled to evacuation centers since it began spewing ash and spilling lava two weeks ago.

(AP Photo/Bullit Marquez)

Volunteers Stack Rice

Dec. 28: Volunteers stack plastic bags of rice and canned goods prior to distributing them to Mayon volcano evacuees at Salvacion Elementary School which serves as a temporary shelter in Salvacion, Albay province, about 500 kilometers southeast of Manila, Philippines. More than 47,000 residents living around the extended 8-kilometer danger zone around the restive Mayon volcano are now housed in different evacuation centers and is likely to stay beyond the Christmas holidays since it began spewing ash and continuing lava flow Dec. 14.

(AP Photo/Bullit Marquez)

Cascades of Lava on Mayon

Dec. 27: Lava cascades down the slopes of Mayon volcano during its continued mild eruption as seen from Sto Domingo, Albay province, about 300 miles southeast of Manila, Philippines Sunday evening. More than 47,000 residents living around the extended 5-mile danger zone around the volcano are now housed in different evacuation centers and is likely to stay beyond the Christmas holidays since it began spewing ash and continuing lava flow December 14, 2009.

(AP Photo/Bullit Marquez)

Lava Flows Continue on Mayon

Dec. 27: Lava cascades down the slopes of Mayon volcano during its continued mild eruption as seen from Legazpi city, Albay province, about 310 miles southeast of Manila, Philippines. More than 47,000 people living within a 5-mile danger zone around the volcano have fled to evacuation centers since it began spewing ash and spilling lava two weeks ago.

(AP Photo/Bullit Marquez)

Philippines_Volcano_Saut_2_

Dec. 25: Lava flows continuously from the crater of Mayon volcano in a continuing mild eruption as viewed from Legazpi city, Albay province, about 500 kilometers southeast of Manila, Philippines on Christmas day.

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Dec. 25: Lava flows continuesly from the crater of Mayon volcano in a continuing mild eruption as viewed from Legazpi city, Albay province, about 300 miles southeast of Manila, Philippines before dawn on Christmas day.

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Dec. 25: Lava flows continuously from the crater of Mayon volcano in a continuing mild eruption as viewed from Legazpi city, Albay province, about 300 miles southeast of Manila, Philippines on Christmas day.

Philippines Volcano

Dec. 25: Lava flows continuously from the crater of Mayon volcano in a continuing mild eruption as viewed from Legazpi city, Albay province, about 300 miles southeast of Manila, Philippines on Christmas day.

Philippines_Volcano_Saut_6_

Dec. 25: Lava flows continuously from the crater of Mayon volcano in a continuing mild eruption as viewed from Legazpi city, Albay province, about 300 miles southeast of Manila, Philippines on Christmas day.

(AP Photo/Bullit Marquez)

Philippines_Volcano_Saut

Dec.25: Lava flows continuously from the crater of Mayon volcano in a continuing mild eruption as viewed from Sto. Domingo township, Albay province, about 500 kilometers southeast of Manila, Philippines.

Philippines_Volcano_Saut_7_

Dec. 24: Reluctant residents living within the extended 8-kilometer-danger zone evacuate to safer grounds following the continued mild eruption of Mayon volcano in Albay province, about 500 kilometers southeast of Manila, Philippines.

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Dec. 24: A huge column of ash envelopes the foot of Mayon volcano as it spews ash in a continuing mild eruption as viewed from Legazpi city, Albay province, about 500 kilometers southeast of Manila, Philippines at dawn on Christmas Eve.

Lava on Mayon

Dec.23: Lava cascades down the slopes of Mayon volcano in a continuing mild eruption as viewed from Legazpi city, Albay province, about 500 kilometers southeast of Manila, Philippines. Tens of thousands of evacuees are expected to spend Christmas in different evacuation centers after the country's most active volcano began spewing ash last week coupled with continuing lava flow.

(AP Photo/Bullit Marquez)

Columns of Ash

Dec. 23: A column of ash shoots up to the sky in another mild eruption of the cloud-covered Mayon volcano as viewed from Legazpi city in Albay province, 500 kilometers southeast of Manila, Philippines. The country's most active volcano began spewing ash last week and continuing lava flow in increasing signs of activity that prompted government authorities to force the evacuation of tens of thousands of residents living within the extended 8-kilometer danger zone.

(AP Photo/Bullit Marquez)

Evacuees Scramble for Candies

Dec. 23: Mayon volcano evacuees scramble for candies being distributed by army troopers at an evacuation center in Legazpi city in Albay province, 500 kilometers southeast of Manila, Philippines. Tens of thousands of evacuees are expected to spend Christmas in different evacuation centers after the country's most active volcano began spewing ash last week coupled with continuing lava flow.

(AP Photo/Bullit Marquez)

Lava on Mayon

Dec. 23: Lava cascades down the slopes of Mayon volcano in a continuing mild eruption as viewed from Legazpi city, Albay province, about 500 kilometers southeast of Manila, Philippines. Tens of thousands of evacuees are expected to spend Christmas in different evacuation centers after the country's most active volcano began spewing ash last week coupled with continuing lava flow.

(AP Photo/Bullit Marquez)

Evacuees Entertained by Soldiers

Dec. 23: Mayon volcano evacuees are entertained by soldiers wearing Santa hats at an evacuation center in Legazpi city in Albay province, 500 kilometers southeast of Manila, Philippines. Tens of thousands of evacuees are expected to spend Christmas in different evacuation centers after the country's most active volcano began spewing ash last week coupled with continuing lava flow.

(AP Photo/Bullit Marquez)

Columns of Ash

Dec. 23: A column of ash shoots up to the sky in another mild eruption of the cloud-covered Mayon volcano as viewed from Legazpi city in Albay province, 300 miles southeast of Manila, Philippines at sunrise. The country's most active volcano began spewing ash last week and continuing lava flow in increasing signs of activity that prompted government authorities to force the evacuation of tens of thousands of residents living within the extended 5-mile danger zone.

(AP Photo/Bullit Marquez)

Columns of Ash

Dec. 23: A column of ash shoots up to the sky in another mild eruption of the cloud-covered Mayon volcano as viewed from Legazpi city in Albay province, 300 miles southeast of Manila, Philippines at sunrise. The country's most active volcano began spewing ash last week and continuing lava flow in increasing signs of activity that prompted government authorities to force the evacuation of tens of thousands of residents living within the extended 5-mile danger zone.

(AP Photo/Bullit Marquez)

Columns of Ash

Dec. 23: A column of ash shoots up to the sky in another mild eruption of the cloud-covered Mayon volcano as viewed from Legazpi city in Albay province, 300 miles southeast of Manila, Philippines at sunrise. The country's most active volcano began spewing ash last week and continuing lava flow in increasing signs of activity that prompted government authorities to force the evacuation of tens of thousands of residents living within the extended 5-mile danger zone.

(AP Photo/Bullit Marque)

Mayon Volcano Spews Ash

Dec. 22: Mayon volcano spews ash anew in a mild eruption as viewed from Legazpi city in Albay province, 500 kilometers southeast of Manila, Philippines. Almost all of the 47,000 residents living on the slopes of a rumbling volcano in the central Philippines have moved to emergency shelters, and lava and earthquakes Tuesday heralded what officials say could be a major eruption.

(AP Photo/Bullit Marquez)

Commuters Wear Face Masks

Dec. 22: Commuters wear face masks to avoid volcanic ash shrouding Guinobatan township near the restive Mayon volcano in Albay province, about 500 kilometers southeast of Manila, Philippines. A mild ashfall is being felt in Guinobatan and nearby towns as the country's most active volcano continue to spew ash since last week.

(AP Photo/Bullit Marquez)

Mayon Spews Ash Anew

Dec. 22: Mayon volcano spews ash anew in a mild eruption as viewed from Legazpi city in Albay province, 500 kilometers southeast of Manila, Philippines. Almost all of the 47,000 residents living on the slopes of a rumbling volcano in the central Philippines have moved to emergency shelters, and lava and earthquakes Tuesday heralded what officials say could be a major eruption.

(AP Photo/Bullit Marquez)

Soldiers in Santa Hats Distribute Toys

Dec. 22: Soldiers, wearing Santa hats, distribute toys to children evacuees at an evacuation center in Legazpi city, Albay province, about 500 kilometers southeast of Manila, Philippines. Tens of thousands of residents living within the extended 8-kilometer danger zone of Mayon volcano are now housed in evacuation centers following continued signs of restiveness and are most likely to spend Christmas away from their homes.

(AP Photo/Mike Alquinto)

Mayon Volcano Spews Ash Anew

Dec. 22: Mayon volcano spews ash anew in a mild eruption as viewed from Legazpi city in Albay province, 500 kilometers southeast of Manila, Philippines. Almost all of the 47,000 residents living on the slopes of a rumbling volcano in the central Philippines have moved to emergency shelters, and lava and earthquakes Tuesday heralded what officials say could be a major eruption.

(AP Photo/Bullit Marquez)

Evacuees Rest in Temp Shelters

Dec. 22: Mayon volcano evacuees rest in their temporary shelter at an evacuation center in Sto Domingo, Albay province, about 500 kilometers southeast of Manila, Philippines. Tens of thousands of residents living within the 8-kilometer danger zone of Mayon volcano are now housed in evacuation centers following continued signs of restiveness and are most likely to spend Christmas away from their homes.

(AP Photo/Bullit Marquez)

Mayon Volcano Spews Ash Anew

 Dec. 22: Mayon volcano spews ash anew in a mild eruption behind an advertisement board as viewed from Legazpi city in Albay province, 500 kilometers southeast of Manila, Philippines. The country's most active volcano began spewing ash last week and continuing lava flow in increasing signs of activity that prompted government volcanologists to raise the five-level alert to "4" and forced the evacuation of tens of thousands of residents living within the extended 8-kilometer danger zone.

(AP Photo/Bullit Marquez)

Lava Continues to Flow

Dec. 20: Lava continues to flow down the slopes of the Mayon volcano, seen from Legazpi city in Albay province, 311 miles southeast of Manila, Philippines. The Philippines' most active volcano could have a huge eruption within days, officials warned Sunday after detecting a drastic surge in earthquakes and eerie rumbling sounds in surrounding foothills. Tens of thousands of villagers have been evacuated as a precaution.

(AP Photo/Bullit Marquez)

Lava Continues to Flow

Dec. 20: Lava cascades further down the slopes of Mayon volcano in Legazpi city, Albay province, about 500 kilometers southeast of Manila, Philippines. Tens of thousands residents living around the slopes of Mayon are now housed in evacuation centers and most likely will spend Christmas away from their homes as the country's most active volcano became restive a week ago.

(AP Photo/Bullit Marquez)

Residents Evacuated

Dec. 20: Lava continues to cascade down the slopes of Mayon volcano as viewed from Legazpi city in Albay province. Government volcanollogists raised the five-level alert of Mayon volcano to 4 following increased activity.

(AP Photo/Mike Alquinto)

Lava Flows Continue

Dec. 20: Lava continues to cascade down the slopes of Mayon volcano as viewed from Legazpi city in Albay province. Government volcanologists raised the five-level alert of Mayon volcano to 4 following increased activity.

(AP Photo/Bullit Marquez)

Lava Continues to Flow

Dec. 19: Lava continues to cascade down the slopes of Mayon volcano for the sixth straight day early in Legazpi city, Albay province, about 300 miles southeast of Manila, Philippines. More than 34, 000 people living around the volcano have been evacuated following increased restiveness of the country's most active volcano. A total 197 volcanic quakes was recorded for the period Friday and morning of Saturday, with only one "ash explosion" recorded in the morning as compared to 18 Friday.

(AP Photo/Bullit Marquez)

Mayon Smokes

Dec. 19: Mayon volcano spews mild ash in the first recorded "ash explosion" for in Legazpi city, Albay province, about 300 miles southeast of Manila, Philippines. More than 34, 000 people living around the volcano have been evacuated following increased restiveness of the country's most active volcano.

(AP Photo/Bullit Marquez)

Ash Spews Anew

Dec. 18: Mayon volcano spews ash anew in another "ash explosion" as viewed in Legazpi city, Albay province, about 500 kilometers south of Manila. Security forces will forcibly evacuate thousands of residents reluctant to leave their farms around the slopes of the country's most active volcano despite fears of a major eruption.

(AP Photo/Bullit Marquez)

Mayon Volcano Spews Ash Anew

 Dec. 18: Mayon volcano spews ash anew in another "ash explosion" as viewed in Legazpi city, Albay province, about 500 kilometers south of Manila, Philippines. Security forces will forcibly evacuate thousands of residents reluctant to leave their farms around the slopes of the country's most active volcano despite fears of a major eruption, officials said.

(AP Photo/Bullit Marquez)

Evacuees Sleep in Classroom

Dec. 18: An evacuee sweeps the floor as children sleep inside a classroom of a school donated by the Spanish government after being evacuated at Guinobatan township, Albay province, 500 kilometers southeast of Manila, Philippines. Security forces in army trucks Friday sent about 3,000 residents outside the danger zone surrounding the smoldering Mayon volcano, which looked set for a major eruption after days of shooting ash plumes and spilling lava.

(AP Photo/Bullit Marquez)

Smoke Rises from Lava Flow

Dec. 18: Smoke rises from the lava flowing down the gully of Mayon volcano, as viewed in Legazpi city, Albay province, about 500 kilometers southeast of Manila, Philippines. Security forces in army trucks Friday sent about 3,000 residents outside the danger zone surrounding the smoldering Mayon volcano, which looked set for a major eruption after days of shooting ash plumes and spilling lava.

(AP Photo/Bullit Marquez)

Mayon Spews Ash Anew

Dec. 18: Mayon volcano spews ash anew in Legazpi city, Albay province, about 500 kilometers southeast of Manila, Philippines. Security forces in army trucks Friday sent about 3,000 residents outside the danger zone surrounding the smoldering Mayon volcano, which looked set for a major eruption after days of shooting ash plumes and spilling lava.

(AP Photo/Bullit Marquez)

Lava Flow from Mayon

Dec. 17: Lava cascades down the slopes of the Mayon volcano in Legazpi city, Albay province, at dawn about 310 miles south of Manila, Philippines. Security forces will forcibly evacuate thousands of residents reluctant to leave their farms near the smoldering volcano, officials said.

(AP Photo/Dan Amaranto)

Evacuees Cook in Mayon's Shadow

Dec.17: Evacuees cook their meals amidst lava cascading down the slopes of the Mayon volcano in Legazpi city, Albay province, at dawn, about 310 miles south of Manila, Philippines. Security forces will forcibly evacuate thousands of residents reluctant to leave their farms near the smoldering volcano in the Philippines despite fears of a major eruption, officials said.

(AP Photo/Dan Amaranto)

Dawn Mass Near Mayon

Dec. 17: Catholic devotees attend a dawn mass leading up to Christmas amidst lava cascading down the slopes of the Mayon volcano in Legazpi city, Albay province, at dawn, about 310 miles south of Manila, Philippines. Security forces will forcibly evacuate thousands of residents reluctant to leave their farms near the smoldering volcano, officials said.

(AP Photo/Dan Amaranto)

Evacuees Play Bingo

Dec. 17: Evacuees play bingo games as they continue to be housed in a school following Mayon volcano's restiveness in Legazpi city, Albay province, about 310 miles south of Manila, Philippines. The Mayon volcano, which has blown its top nearly 40 times in 400 years, menaced nearby residents Wednesday as Philippine authorities moved more than 30,000 people to shelters in case of a larger eruption.

(AP Photo/Bullit Marquez)

Temporary Shelter

Dec. 17: Residents living around the slopes of the Mayon volcano are housed in a classroom of a school following several small eruptions of ash and lava, in Legazpi city, Albay province, about 310 miles south of Manila, Philippines. The Mayon volcano, which has blown its top nearly 40 times in 400 years, menaced nearby residents Wednesday as Philippine authorities moved more than 30,000 people to shelters in case of a larger eruption.

(AP Photo/Bullit Marquez)

Mayon Spews Ash

Dec. 17: Mayon volcano in Legazpi city, Albay province, continues to spew ash for the fourth straight day as viewed from a passenger plane about 300 miles south of Manila, Philippines. The country's most active volcano remains on "alert level 3" and residents are still prohibited from venturing into the 3.75-mile permanent danger zone. In December 2006, ash deposits from previous eruption rolled down its slopes at the onslaught of a typhoon, killing more than a thousand residents living around the cone-shaped volcano.

(AP Photo/Bullit Marquez)

Mayon Spews Ash

Dec. 17: Mayon volcano in Legazpi city, Albay province, continues to spew ash for the fourth straight day as viewed from a passenger plane about 300 miles south of Manila, Philippines. The country's most active volcano remains on "alert level 3" and residents are still prohibited from venturing into the 3.75-mile permanent danger zone. In December 2006, ash deposits from previous eruption rolled down its slopes at the onslaught of a typhoon, killing more than a thousand residents living around the cone-shaped volcano.

(AP Photo/Bullit Marquez)

Mayon Spews Ash

Dec. 17: Mayon volcano in Legazpi city, Albay province, continues to spew ash for the fourth straight day as viewed from a passenger plane about 300 miles south of Manila, Philippines. The country's most active volcano remains on "alert level 3" and residents are still prohibited from venturing into the 3.75-mile permanent danger zone. In December 2006, ash deposits from previous eruption rolled down its slopes at the onslaught of a typhoon, killing more than a thousand residents living around the cone-shaped volcano.

(AP Photo/Bullit Marquez)

Mayon Lava Flows

Dec. 16: Glowing lava flows out of the crater of Mayon volcano in Legazpi city, 310 miles south of Manila. The Philippines' most active volcano spewed ash as high as 500 meters and burning rocks and mud a kilometer down its slopes on Wednesday and vulcanologists expect a major hazardous eruption soon.

(REUTERS/Erik de Castro)

Mayon Lava Flows

Dec. 16: Glowing lava flows out of the crater of Mayon volcano in Legazpi city, 310 miles south of Manila. The Philippines' most active volcano spewed ash as high as 500 meters and burning rocks and mud a kilometer down its slopes on Wednesday. Vulcanologists expect a major hazardous eruption soon.

(REUTERS/Erik de Castro)

Mayon from Space

Dec. 15: The Mayon volcano is captured by the Advanced Land Imager on NASA's Earth Observing-1 (EO-1) satellite. A small plume of ash or steam is blowing west from the summit. Dark-colored lava or debris flows from previous eruptions streak the flanks of the mountain. The Mayon volcano, which has blown its top nearly 40 times in 400 years, menaced nearby residents with small eruptions of ash and lava as Philippine authorities moved more than 30,000 people to shelters in case of a larger eruption.

(AP Photo/NASA)

Mayon Volcano

Dec. 15: Mayon volcano in Legazpi city, Albay province, continued to spew ash 310 miles south of Manila, Philippines. The Philippine Institute of Volcanology and Seismology, PHIVOLCS, has raised the five-alert level to three following increased activity of the country's most active volcano and residents are prohibited from venturing into the 4-mile permanent danger zone. In December 2006 ash deposits from a previous eruption rolled down its slopes at the onslaught of a typhoon killing more than a thousand residents living around the cone-shaped volcano.

(AP Photo/Nelson Salting)

Billowing Smoke

Dec. 15: The Philippine Institute of Volcanology and Seismology, PHIVOLCS, has raised the five-alert level to three following increased activity of the country's most active volcano and residents are prohibited from venturing into the 4-mile permanent danger zone. In December 2006 ash deposits from a previous eruption rolled down its slopes at the onslaught of a typhoon killing more than a thousand residents living around the cone-shaped volcano.

(AP Photo/Nelson Salting)

Lava Cascades Down

Dec. 15: Lava cascades down the slopes of Mayon volcano in Legazpi city, Albay province, at dawn about 310 miles south of Manila, Philippines. The Philippine Institute of Volcanology and Seismology, PHIVOLCS, has raised the five-alert level to three following increased activity of the country's most active volcano and residents are prohibited from venturing into the 4-mile permanent danger zone. In December 2006 ash deposits from a previous eruption rolled down its slopes at the onslaught of a typhoon killing more than a thousand residents living around the cone-shaped volcano.

(AP Photo/Nelson Salting)

Residents Evacuate

Dec. 15: Residents living around the slopes of Mayon volcano evacuate after the five-level alert was raised to three following increased activity of the country's most active volcano in Albay province, about 500 kilometers south of Manila, Philippines. In December 2006 ash deposits from previous eruption rolled down its slopes at the onslaught of a typhoon killing more than a thousand residents living around the cone-shaped volcano.

(AP Photo/Nelson Salting)

Residents Evacuate

Dec. 15: Residents living around the slopes of Mayon volcano evacuate after the five-level alert was raised to three following increased activity of the country's most active volcano in Albay province, about 500 kilometers south of Manila, Philippines. In December 2006 ash deposits from previous eruption rolled down its slopes at the onslaught of a typhoon killing more than a thousand residents living around the cone-shaped volcano.

(AP Photo/Nelson Salting)

Lava Cascades Down

Dec. 14: Lava cascades down the slopes of Mayon volcano in Legazpi city, Albay province, about 310 miles south of Manila, Philippines. The Philippine Institute of Volcanology and Seismology, PHIVOLCS, has raised the five-alert level to three following increased activity of the country's most active volcano and residents are prohibited from venturing into the 4-mile permanent danger zone. In December 2006 ash deposits from a previous eruption rolled down its slopes at the onslaught of a typhoon killing more than a thousand residents living around the cone-shaped volcano.

(AP Photo/Nelson Salting)

Lava Cascades Down

Dec. 14: Lava cascades down the slopes of Mayon volcano in Legazpi city, Albay province, about 310 miles south of Manila, Philippines. The Philippine Institute of Volcanology and Seismology, PHIVOLCS, has raised the five-alert level to three following increased activity of the country's most active volcano and residents are prohibited from venturing into the 4-mile permanent danger zone. In December 2006 ash deposits from a previous eruption rolled down its slopes at the onslaught of a typhoon killing more than a thousand residents living around the cone-shaped volcano.

(AP Photo/Nelson Salting)

Lava Flows

Dec. 14: Lava flows down the slopes of Mayon volcano in Legazpi city, Albay province, about 310 miles south of Manila, Philippines. The country's most active volcano remains on "alert level 2" and residents are still prohibited from venturing into the 4-mile permanent danger zone. In December 2006 ash deposits from previous eruption rolled down its slopes at the onslaught of a typhoon killing more than a thousand residents living around the cone-shaped volcano.

(AP Photo/Nelson Salting)

Signs of Trouble

Nov. 11, 2009: Mayon volcano spews grayish ash for the second time in a day at Legazpi, Albay province, about 212 miles southeast of Manila, Philippines. Chief state volcanologist Renato Solidum said the cone-shaped Mayon volcano in the central Philippines has shot an ash plume into the air and advised nearby residents to be ready to move to safety in case of eruption. The country's most active volcano last erupted in 2006 and typhoon-triggered mudslides later that year buried entire villages, killing more than 1,000 people. 

(AP Photo/Nelson Salting)

Signs of Trouble

Nov. 11, 2009: Residents are evacuated to safer grounds after Mayon volcano, which killed scores in an eruption 16 years ago, spewed ash twice, in Legazpi, Albay province, about 212 miles southeast of Manila, Philippines. Chief state volcanologist Renato Solidum said the alert level remains the same at Mayon, the country's most active volcano, but that if magma continues to rise below the glowing crater there could be another eruption within weeks.

(AP Photo/Elmer Bandol)

2006 Eruption

July 17, 2006: Lava cascades down the slopes of the 8,077-foot Mayon volcano in the central Bicol region in the Philippines in 2006. On Friday July 10, 2009, Philippine scientists said the cone-shaped Mayon volcano, the country's most active, began rumbling again, emitting steam and a strong glow at the summit crater that can be seen with the naked eye and raised the five-step alert system from 1 to 2. State volcanologists said the frequency of volcanic earthquakes had increased, signifying the possible movement of magma below the surface, which could lead to ash explosions and eventually eruption.

(AP Photo/Bullit Marquez)

Mayon Volcano Near Eruption in Philippines

Volcanologists say an eruption of the Mayon volcano is imminent, after ash explosions and dark orange lava began trickling down the mountain.

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