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Workers shell corn as Mount Sinabung is spewing volcanic ash in Berastepu, North Sumatra, Indonesia, Tuesday, Nov. 26, 2013. Authorities raised the alert status of the volcano to the highest level on Sunday after it had a series of eruptions. (AP Photo/Binsar Bakkara) ( APTOPIX Indonesia Volcano )

Mount Sinabung spews volcanic hot gas and ashes, as it is seen from Tiga Pancur village in Karo, North Sumatra, Indonesia, 26 November 2013. According to the National Disaster Management Agency, at least 17,713 people fled their homes following the latest Sinabung eruption. Indonesian authorities raised the alert to the highest level for Mount Sinabung volcano on Sumatra after it erupted eight times on 24 November 2013. EPA/DEDI SAHPUTRA ( INDONESIA SINABUNG VOLCANO )

This photo taken on November 25, 2013 shows a cabbage covered with ash following the Sinabung volcano eruption in Karo. Several thousand people left their homes overnight, taking the total number of those who have fled since the volcano rumbled to life to around 12,300, said the national disaster agency. AFP PHOTO / SUTANTA ADITYA/AFP/Getty Images ( 524997849 )

Villagers receive food at a temporary evacuation shelter at Tiga Binanga village on November 26, 2013 in Karo District, North Sumatra, Indonesia. The number of displaced persons has increased to 18,000 in Western Indonesia as Mount Sinabung continues to spew ash and smoke after several eruptions since September. Officials expect the number of evacuees to rise as volcanic activity remains high. (Photo by Ulet Ifansasti/Getty Images) ( 452077047 )

Indonesian villagers ride on a motorbike as Mount Sinabung spews volcanic ash as seen from Naman Teran village, Karo, North Sumatra, Indonesia, 26 November 2013. EPA/DEDI SAHPUTRA ( INDONESIA SINABUNG VOLCANO )

An Indonesian villager dries corn as Mount Sinabung spews volcanic ash at Guru Kinayan village, Karo, North Sumatra, Indonesia, 26 November 2013. EPA/DEDI SAHPUTRA ( INDONESIA SINABUNG VOLCANO )

Indonesian villagers ride on a road covered with volcanic ash from Mount Sinabung's eruption in Suka Nalu village, Karo, North Sumatra, Indonesia, 26 November 2013. EPA/DEDI SAHPUTRA ( INDONESIA SINABUNG VOLCANO )

Villagers watch Mount Sinabung spewing volcanic ash into in Tiga Pancur, North Sumatra, Indonesia, Monday, Nov. 25, 2013. Powerful bursts of hot ash and gravel erupted from the rumbling volcano in western Indonesia Monday, a day after authorities had raised the volcano's alert status to the highest level. (AP Photo/Binsar Bakkara) ( APTOPIX Indonesia Volcano )

A farmer loads cabbages into a cart as Mount Sinabung is spewing volcanic ash in Sukan Debi, North Sumatra, Indonesia, Tuesday, Nov. 26, 2013. Authorities raised the alert status of the volcano to the highest level on Sunday after it had a series of eruptions. (AP Photo/Binsar Bakkara) ( Indonesia Volcano )

Mount Sinabung is seen from inside a car after a rain in Dalan Jahe, North Sumatra, Indonesia, Monday, Nov. 25, 2013. Powerful bursts of hot ash and gravel erupted from the rumbling volcano in western Indonesia Monday, a day after authorities had raised the volcano's alert status to the highest level. (AP Photo/Binsar Bakkara) ( Indonesia Volcano )

Villagers who flee their homes following the eruption of Mount Sinabung build a tent for their temporary shelter in Dalan Jahe, North Sumatra, Indonesia, Monday, Nov. 25, 2013. (AP Photo/Binsar Bakkara) ( APTOPIX Indonesia Volcano )

A woman stands in her field, which has been covered by ash from the eruption of mount Sinabung in Sigarang Garang village on November 25, 2013 in Karo district, North Sumatra, Indonesia. (Photo by Ulet Ifansasti/Getty Images) ( 451906093 )

A boy waring a mask is carried through through an area covered by ash after Mount Sinabung erupted spewing volcanic materials at Berastagi village on November 25, 2013 in Karo district, North Sumatra, Indonesia. (Photo by Ulet Ifansasti/Getty Images) ( 451906231 )

A woman works in her field which has been covered by ash from eruption of mount Sinabung in Sigarang Garang village on November 25, 2013 in Karo district, North Sumatra, Indonesia. (Photo by Ulet Ifansasti/Getty Images) ( 451906303 )

A car passing through an area covered by ash after Mount Sinabung erupted spewing volcanic materials in Sigarang Garang village on November 25, 2013 in Karo district, North Sumatra, Indonesia. (Photo by Ulet Ifansasti/Getty Images) ( 451906727 )

Mount Sinabung spewing pyroclastic smoke is seen from Tigapancur village on November 25, 2013 in Karo district, North Sumatra, Indonesia. (Photo by Ulet Ifansasti/Getty Images) ( 451906403 )

Villagers work in their field which has been covered by ash from eruption of mount Sinabung in Sigarang Garang village on November 25, 2013 in Karo district, North Sumatra, Indonesia. (Photo by Ulet Ifansasti/Getty Images) ( 451906743 )

In this late Sunday, Nov. 24, 2013 photo, Mount Sinabung spews volcanic ash into the air as seen from Tiga Pancur, North Sumatra, Indonesia. (AP Photo/Binsar Bakkara) ( APTOPIX Indonesia Volcano )

Indonesian woman holds their baby at a temporary evacuation shelter in Berastagi village on November 25, 2013 in Karo district, North Sumatra, Indonesia. (Photo by Ulet Ifansasti/Getty Images) ( 451928035 )

Villagers are seen in a temporary evacuation shelter in Berastagi village on November 25, 2013 in Karo district, North Sumatra, Indonesia. (Photo by Ulet Ifansasti/Getty Images) ( 451928057 )

This photo taken on November 25, 2013 shows a man driving his car covered by ash following the Sinabung volcano eruption in Karo. Several thousand people left their homes overnight, taking the total number of those who have fled since the volcano rumbled to life to around 12,300, said the national disaster agency. AFP PHOTO / SUTANTA ADITYA/AFP/Getty Images ( 524997837 )

A boy holds a doll at a temporary evacuation shelter in Tiga Binanga village on November 26, 2013 in Karo District, North Sumatra, Indonesia. (Photo by Ulet Ifansasti/Getty Images) ( 452077029 )

A woman wears a mask at a temporary evacuation shelter at Tiga Binanga village on November 26, 2013 in Karo District, North Sumatra, Indonesia. (Photo by Ulet Ifansasti/Getty Images) ( 452077055 )

A man works at drying corn as mount SInabung spews hot smoke in Berastepu village on November 26, 2013 in Karo District, North Sumatra, Indonesia. (Photo by Ulet Ifansasti/Getty Images) ( 452077065 )

Motorists ride pass by as Mount Sinabung spews volcanic ash into the air in Tiga Pancur, North Sumatra, Indonesia, Tuesday, Nov. 26, 2013. (AP Photo/Binsar Bakkara) ( Indonesia Volcano )

Villagers hold plates as they wait food at a temporary evacuation shelter at Tiga Binanga village on November 26, 2013 in Karo District, North Sumatra, Indonesia. (Photo by Ulet Ifansasti/Getty Images) ( 452077077 )

A man watches Mount Sinabung spewing volcanic ash into the air from inside his house in Tiga Pancur, North Sumatra, Indonesia, Tuesday, Nov. 26, 2013. (AP Photo/Binsar Bakkara) ( Indonesia Volcano )

Villagers are seen in a temporary evacuation shelter at Tiga Binanga village on November 26, 2013 in Karo District, North Sumatra, Indonesia. (Photo by Ulet Ifansasti/Getty Images) ( 452077079 )

Elementary school students wear masks to protect their respiration from the volcanic ash from the eruption of Mount Sinabung, seen in the background, in Sukan Debi, North Sumatra, Indonesia, Tuesday, Nov. 26, 2013. (AP Photo/Binsar Bakkara) ( Indonesia Volcano )

This photo taken on November 25, 2013 shows a farmer working on a chilli farm field covered with ash following Sinabung volcano's eruption in Karo. AFP PHOTO / SUTANTA ADITYA/AFP/Getty Images ( 524997821 )

This picture taken on November 25 shows villagers in front of the erupting Sinabung volcano in Karo. AFP PHOTO / KARISMA TARIGAN/AFP/Getty Images ( 524997839 )

This picture taken on November 24, 3013 shows Sinabung volcano spewing volcanic ash in Karo. AFP PHOTO / KHARISMA TARIGAN/AFP/Getty Images ( 524973387 )

This picture taken on November 25 shows a villager walking past a field covered by ash following the Sinabung volcano eruption in Karo. AFP PHOTO / IVAN DAMANIK/AFP/Getty Images ( 524997846 )

This picture taken on November 25 shows a farmer harvesting coffee beans as Sinabung volcano is seen erupting in the background in Karo. AFP PHOTO / SUTANTAN ADITYA/AFP/Getty Images ( 524997853 )

Villagers watching cold lava flow from mount Sinabung in Gamber village on November 15, 2013 in Karo district, South Sumatra, Indonesia. Up to 4,300 residents have been evacuated from five villages in North Sumatra due to the volcanic eruptions of Mount Sinabung. The volcano has been erupting for several days, spewinging ash and lava 2.5 miles into the sky. (Photo by Ulet Ifansasti/Getty Images) ( 188078912 )

Sumarni Br.Sitepu carries her belongings as she leaves her house in Mardinding village to a temporary evacuation center on November 15, 2013 in Karo district, South Sumatra, Indonesia. (Photo by Ulet Ifansasti/Getty Images) ( 188078900 )

Children stand beside a house as painting of mount Sinabung erupts is seen on a truck in Suka Nalu village on November 15, 2013 in Karo district, South Sumatra, Indonesia. Up to 4,300 residents have been evacuated from five villages in North Sumatra due to the volcanic eruptions of Mount Sinabung. (Photo by Ulet Ifansasti/Getty Images) ( 188078906 )

Chairs and sandals covered by ash are seen at an abandoned village in Mardinding village, located just less than three kilometers from mount Sinabung on November 15, 2013 in Karo district, South Sumatra, Indonesia. (Photo by Ulet Ifansasti/Getty Images) ( 188078908 )

A view of mount Sinabung spewing smoke is seen from Tiga Pancur village on November 15, 2013 in Karo district, South Sumatra, Indonesia. (Photo by Ulet Ifansasti/Getty Images) ( 188078913 )

Villagers gather at a coffee house in Suka Nalu village on November 15, 2013 in Karo district, South Sumatra, Indonesia. Up to 4,300 residents have been evacuated from five villages in North Sumatra due to the volcanic eruptions of Mount Sinabung. The volcano has been erupting for several days, spewinging ash and lava 2.5 miles into the sky. (Photo by Ulet Ifansasti/Getty Images) ( 188078918 )

A villager watching cold lava flow from mount Sinabung in Gamber village on November 15, 2013 in Karo district, South Sumatra, Indonesia. (Photo by Ulet Ifansasti/Getty Images) ( 188078917 )

Villagers watching cold lava flow from mount Sinabung in Gamber village on November 15, 2013 in Karo district, South Sumatra, Indonesia. (Photo by Ulet Ifansasti/Getty Images) ( 188078920 )

A puppy is seen at an abandoned village in Mardinding village, located just less than three kilometers from mount Sinabung on November 15, 2013 in Karo district, South Sumatra, Indonesia. (Photo by Ulet Ifansasti/Getty Images) ( 188078899 )

A view of mount Sinabung spewing smoke is seen from Tiga Pancur village on November 15, 2013 in Karo district, South Sumatra, Indonesia. (Photo by Ulet Ifansasti/Getty Images) ( 188078919 )

A woman carries her daughter as Mount Sinabung spews pyroclastic smoke seen from Tigapancur village in Karo district on November 14, 2013 in Medan, Sumatra, Indonesia. Up to 4,300 residents have been evacuated from five villages in North Sumatra due to the volcanic eruptions of Mount Sinabung. The volcano has been erupting for several days, spewing ash and lava 2.5 miles into the sky. (Photo by Ulet Ifansasti/Getty Images) ( 187965329 )

Villagers carry their belongings as they await transport to a temporary evacuation center following another eruption of Mount Sinabung in Karo district on November 14, 2013 in Medan, Sumatra, Indonesia. Up to 4,300 residents have been evacuated from five villages in North Sumatra due to the volcanic eruptions of Mount Sinabung. The volcano has been erupting for several days, spewing ash and lava 2.5 miles into the sky. (Photo by Ulet Ifansasti/Getty Images) ( 187965335 )

Mount Sinabung spews pyroclastic smoke as seen from Tigapancur village in Karo district on November 14, 2013 in Medan, Sumatra, Indonesia. Up to 4,300 residents have been evacuated from five villages in North Sumatra due to the volcanic eruptions of Mount Sinabung. The volcano has been erupting for several days, spewing ash and lava 2.5 miles into the sky. (Photo by Ulet Ifansasti/Getty Images) ( 187965197 )

Mount Sinabung spews pyroclastic smoke as seen from Tigapancur village in Karo district on November 14, 2013 in Medan, Sumatra, Indonesia. Up to 4,300 residents have been evacuated from five villages in North Sumatra due to the volcanic eruptions of Mount Sinabung. The volcano has been erupting for several days, spewing ash and lava 2.5 miles into the sky. (Photo by Ulet Ifansasti/Getty Images) ( 187965190 )

Motorists wear masks while passing through an area covered by ash after Mount Sinabung erupted spewing volcanic materials in Karo district on November 14, 2013 in Medan, Sumatra, Indonesia. Up to 4,300 residents have been evacuated from five villages in North Sumatra due to the volcanic eruptions of Mount Sinabung. The volcano has been erupting for several days, spewing ash and lava 2.5 miles into the sky. (Photo by Ulet Ifansasti/Getty Images) ( 187965438 )

Mount Sinabung spews pyroclastic smoke as seen from Tigapancur village in Karo district on November 14, 2013 in Medan, Sumatra, Indonesia. Up to 4,300 residents have been evacuated from five villages in North Sumatra due to the volcanic eruptions of Mount Sinabung. The volcano has been erupting for several days, spewing ash and lava 2.5 miles into the sky. (Photo by Ulet Ifansasti/Getty Images) ( 187965187 )

Villagers sit on a truck being evacuated from their village in Karo district on November 14, 2013 in Medan, Sumatra, Indonesia. Up to 4,300 residents have been evacuated from five villages in North Sumatra due to the volcanic eruptions of Mount Sinabung. The volcano has been erupting for several days, spewing ash and lava 2.5 miles into the sky. (Photo by Ulet Ifansasti/Getty Images) ( 187965192 )

Mount Sinabung spews pyroclastic smoke as seen from Berastagi village in Karo district on November 14, 2013 in Medan, Sumatra, Indonesia. Up to 4,300 residents have been evacuated from five villages in North Sumatra due to the volcanic eruptions of Mount Sinabung. The volcano has been erupting for several days, spewing ash and lava 2.5 miles into the sky. (Photo by Ulet Ifansasti/Getty Images) ( 187965202 )

Villagers harvest potatoes at their field, located just less than four kilometers from mount Sinabung in Karo district on November 14, 2013 in Medan, Sumatra, Indonesia. Up to 4,300 residents have been evacuated from five villages in North Sumatra due to the volcanic eruptions of Mount Sinabung. The volcano has been erupting for several days, spewing ash and lava 2.5 miles into the sky. (Photo by Ulet Ifansasti/Getty Images) ( 187965330 )

An elderly woman is evacuated from the village in Karo district on November 14, 2013 in Medan, Sumatra, Indonesia. Up to 4,300 residents have been evacuated from five villages in North Sumatra due to the volcanic eruptions of Mount Sinabung. The volcano has been erupting for several days, spewing ash and lava 2.5 miles into the sky. (Photo by Ulet Ifansasti/Getty Images) ( 187965333 )

A farmer show tomatoes covered in ash at his field after Mount Sinabung errupted spewing volcanic materials in Karo district on November 14, 2013 in Medan, Sumatra, Indonesia. Up to 4,300 residents have been evacuated from five villages in North Sumatra due to the volcanic eruptions of Mount Sinabung. The volcano has been erupting for several days, spewing ash and lava 2.5 miles into the sky. (Photo by Ulet Ifansasti/Getty Images) ( 187965437 )

Mount Sinabung spews pyroclastic smoke as seen from Berastagi village in Karo district on November 14, 2013 in Medan, Sumatra, Indonesia. Up to 4,300 residents have been evacuated from five villages in North Sumatra due to the volcanic eruptions of Mount Sinabung. The volcano has been erupting for several days, spewing ash and lava 2.5 miles into the sky. (Photo by Ulet Ifansasti/Getty Images) ( 187965439 )

Children wear masks while passing through an area covered by ash after Mount Sinabung erupted spewing volcanic materials in Karo district on November 14, 2013 in Medan, Sumatra, Indonesia. Up to 4,300 residents have been evacuated from five villages in North Sumatra due to the volcanic eruptions of Mount Sinabung. The volcano has been erupting for several days, spewing ash and lava 2.5 miles into the sky. (Photo by Ulet Ifansasti/Getty Images) ( 187965440 )

A woman with her son sits on a truck being evacuated from their village in Karo district on November 14, 2013 in Medan, Sumatra, Indonesia. Up to 4,300 residents have been evacuated from five villages in North Sumatra due to the volcanic eruptions of Mount Sinabung. The volcano has been erupting for several days, spewing ash and lava 2.5 miles into the sky. (Photo by Ulet Ifansasti/Getty Images) ( 187965200 )

Villagers harvest potatoes at their field, located just less than four kilometers from mount Sinabung in Karo district on November 14, 2013 in Medan, Sumatra, Indonesia. Up to 4,300 residents have been evacuated from five villages in North Sumatra due to the volcanic eruptions of Mount Sinabung. The volcano has been erupting for several days, spewing ash and lava 2.5 miles into the sky. (Photo by Ulet Ifansasti/Getty Images) ( 187965331 )

A farmer show tomatoes covered in ash at his field after Mount Sinabung errupted spewing volcanic materials in Karo district on November 14, 2013 in Medan, Sumatra, Indonesia. Up to 4,300 residents have been evacuated from five villages in North Sumatra due to the volcanic eruptions of Mount Sinabung. The volcano has been erupting for several days, spewing ash and lava 2.5 miles into the sky. (Photo by Ulet Ifansasti/Getty Images) ( 187965441 )

A view of tomatos covered by ash after Mount Sinabung began spewing volcanic materials in Karo district on November 14, 2013 in Medan, Sumatra, Indonesia. Up to 4,300 residents have been evacuated from five villages in North Sumatra due to the volcanic eruptions of Mount Sinabung. The volcano has been erupting for several days, spewing ash and lava 2.5 miles into the sky. (Photo by Ulet Ifansasti/Getty Images) ( 187966980 )

A flower blossoms from vegetation covered with volcanic ash from the eruption of Mount Sinabung in Mardingding, North Sumatra, Indonesia, Wednesday, Nov. 6, 2013. The 2,600-meter (8,530-foot) -high volcano has been erupting since Sunday, unleashing volcanic ash high into the sky and forcing the evacuation of villagers living around its slope. (AP Photo/Binsar Bakkara) ( APTOPIX Indonesia Volcano )

A student walks on a road covered with volcanic ash from the eruption of Mount Sinabung in Tiga Nderket, North Sumatra, Indonesia, Wednesday, Nov. 6, 2013. (AP Photo/Binsar Bakkara) ( Indonesia Volcano )

Students sweep volcanic ash from the eruption of Mount Sinabung off the floor of their class room at an elementary school in Tiga Nderket, North Sumatra, Indonesia, Wednesday, Nov. 6, 2013. The 2,600-meter (8,530-foot) -high volcano has been erupting since Sunday, unleashing volcanic ash high into the sky and forcing the evacuation of villagers living around its slope. (AP Photo/Binsar Bakkara) ( Indonesia Volcano )

A kitten sits on the roof of a house that is covered with volcanic ash from the eruption of Mount Sinabung in Mardingding, North Sumatra, Indonesia, Wednesday, Nov. 6, 2013. (AP Photo/Binsar Bakkara) ( APTOPIX Indonesia Volcano )

Students wear masks to protect their respiration from the volcanic ash from the eruption of Mount Sinabung at an elementary school in Tiga Nderket, North Sumatra, Indonesia, Wednesday, Nov. 6, 2013. (AP Photo/Binsar Bakkara) ( Indonesia Volcano )

A man stands on the side of a road covered with volcanic ash from the eruption of Mount Sinabung, in Mardingding, North Sumatra, Indonesia, Tuesday, Nov. 5, 2013. The 2,600-meter (8,530-foot) -high volcano has been erupting since Sunday, unleashing volcanic ash high into the sky and forcing the evacuation of villagers living around its slope. (AP Photo/Binsar Bakkara) ( Indonesia Volcano )

A woman stands outside her house as her front yard is covered with volcanic ash from the eruption of Mount Sinabung, in Mardingding, North Sumatra, Indonesia, Tuesday, Nov. 5, 2013. The 2,600-meter (8,530-foot) -high volcano has been erupting since Sunday, unleashing volcanic ash high into the sky and forcing the evacuation of villagers living around its slope. (AP Photo/Binsar Bakkara) ( Indonesia Volcano )

Mount Sinabung spews volcanic materials during an eruption as seen from Tiga Pancur, North Sumatra, Indonesia, Tuesday, Nov. 5, 2013. (AP Photo/Binsar Bakkara) ( APTOPIX Indonesia Volcano )

Villagers watch as Mount Sinabung spews volcanic ash in Tiga Pancur, North Sumatra, Indonesia, Tuesday, Nov. 5, 2013. (AP Photo/Binsar Bakkara) ( Indonesia Volcano )

Villagers walk on a road covered with volcanic ash from the eruption of Mount Sinabung, background, in Tiga Nderket, North Sumatra, Indonesia, Tuesday, Nov. 5, 2013. (AP Photo/Binsar Bakkara) ( Indonesia Volcano )

This picture made with slow shutter speed shows Mount Sinabung spewing volcanic ash as seen from Tiga Pancur, North Sumatra, Indonesia, Tuesday, Nov. 5, 2013. (AP Photo/Binsar Bakkara) ( APTOPIX Indonesia Volcano )

Villagers watch as Mount Sinabung spews volcanic ash in Tiga Pancur, North Sumatra, Indonesia, Tuesday, Nov. 5, 2013. (AP Photo/Binsar Bakkara) ( Indonesia Volcano )

Trees and vegetation are covered with volcanic ash in Karo district in Indonesia's Sumatra island on November 5, 2013, after the eruption of Mount Sinabung volcano. Hundreds of residents have been evacuated to safer areas as the volcano erupted anew following September eruptions. AFP PHOTO/KHARISHMA TARIGAN/AFP/Getty Images ( 524363422 )

A giant plume of steam and ash rises from the crater of Mount Sinabung volcano during an eruption as seen from Karo district on Indonesia's Sumatra island on November 5, 2013. AFP PHOTO / KARISHMA TARIGAN/AFP/Getty Images ( 524363393 )

Villagers watch Mount Sinabung spewing volcanic ash in Tiga Pancur, North Sumatra, Indonesia, Tuesday, Nov. 5, 2013. The 2,600-meter (8,530-foot) -high volcano has been erupting since Sunday, unleashing volcanic ash high into the sky and forcing the evacuation of villagers living around its slope. (AP Photo/Binsar Bakkara) ( Indonesia Volcano )

A plume of steam and ash rises as lava rolls from the crater of the Mount Sinabung volcano during an eruption as seen from the Karo district on the Indonesian island of Sumatra on November 5, 2013. AFP PHOTO / KARISHMA TARIGAN/AFP/Getty Images ( 524363897 )

Residents watch as a giant plume of steam and ash rise and hot lava rolls from the crater of Mount Sinabung volcano during an eruption as seen from Karo district in Indonesia's Sumatra island on November 5, 2013. AFP PHOTO / STRSTR/AFP/Getty Images ( 524363906 )

Villagers wear mask to protect themselves from volcanic ash from the eruption of Mount Sinabung that fall in Tiga Nderket village, North Sumatra, Indonesia, Monday Nov. 4, 2013. The 2,600-meter (8,530-foot) high volcano has been erupting since Sunday, unleashing volcanic ash high into the sky and forcing the evacuation of villagers living around its slope. (AP Photo/Binsar Bakkara) ( Indonesia Volcano )

A villager watches as Mount Sinabung erupts in Simpang Empat, North Sumatra, Indonesia, Sunday, Nov. 3, 2013. Officials raised the volcano's alert status to the second-highest level after the 2,600-meter (8,530-foot) -high mountain erupted early Sunday. (AP Photo/Ade Sinuhaji) ( Indonesia Volcano )

Villagers walk on a road covered with volcanic ash from Mount Sinabung's eruption in Mardingding, North Sumatra, Indonesia, Monday, Nov. 4, 2013. The volcano erupted Sunday, unleashing volcanic ash high into the sky and forcing the evacuation of villagers living around its slope. (AP Photo/Binsar Bakkara) ( Indonesia Volcano )

Mount Sinabung spews volcanic ash as it erupts as seen from Simpang Empat, North Sumatra, Indonesia, Sunday, Nov. 3, 2013. Officials raised the volcano's alert status to the second-highest level after the 2,600-meter (8,530-foot) -high mountain erupted early Sunday. (AP Photo/Ade Sinuhaji) ( Indonesia Volcano )

Villagers wear masks to protect themselves from volcanic ash from the eruption of Mount Sinabung that fall in Tiga Nderket village, North Sumatra, Indonesia, Monday Nov. 4, 2013. The 2,600-meter (8,530-foot) high volcano has been erupting since Sunday, unleashing volcanic ash high into the sky and forcing the evacuation of villagers living around its slopes. (AP Photo/Binsar Bakkara) ( Indonesia Volcano )

Villagers who were evacuated from their homes following Mount Sinabung's eruption rest in a temporary shelter in Tiga Nderket, North Sumatra, Indonesia, Monday, Nov. 4, 2013. The 2,600-meter (8,530-foot) -high volcano has been erupting since Sunday, unleashing volcanic ash high into the sky and forcing the evacuation of villagers living around its slope. (AP Photo/Binsar Bakkara) ( Indonesia Volcano )

Villagers who were evacuated from their homes following Mount Sinabung's eruption rest in a temporary shelter in Tiga Nderket, North Sumatra, Indonesia, Monday, Nov. 4, 2013. The volcano erupted Sunday, unleashing volcanic ash high into the sky and forcing the evacuation of villagers living around its slope. (AP Photo/Binsar Bakkara) ( Indonesia Volcano )

A hand print is seen on the hood of a car covered with volcanic ash from the eruption of Mount Sinabung that falls in Tiga Nderket village, North Sumatra, Indonesia,Monday Nov. 4, 2013. The 2,600-meter (8,530-foot) high volcano has been erupting since Sunday, unleashing volcanic ash high into the sky and forcing the evacuation of villagers living around its slopes. (AP Photo/Binsar Bakkara) ( Indonesia Volcano )

Villagers wear masks to protect themselves from volcanic ash from the eruption of Mount Sinabung that fall in Tiga Nderket village, North Sumatra, Indonesia, Monday Nov. 4, 2013. The 2,600-meter (8,530-foot) -high volcano has been erupting since Sunday, unleashing volcanic ash high into the sky and forcing the evacuation of villagers living around its slope. (AP Photo/Binsar Bakkara) ( Indonesia Volcano )

A man wearing a mask rides on his motorbike through a road covered with volcanic ash from Mount Sinabung's eruption in Mardingding, North Sumatra, Indonesia, Monday, Nov. 4, 2013. The volcano erupted Sunday, unleashing volcanic ash high into the sky and forcing the evacuation of villagers living around its slope. (AP Photo/Binsar Bakkara) ( Indonesia Volcano )

Residents evacuate to temporary shelters in Karo district in Sumatra island on November 4, 2013 as Mount Sinabung volcano in western Indonesia erupted twice on November 3 hurling red-hot ash and rocks up to seven kilometers into the air and forcing more than 1,000 people to flee their homes. Mount Sinabung on Sumatra island erupted in September for the first time in three years, forcing thousands to flee their homes, and has been erupting intermittently ever since. AFP PHOTO / KHARISMA TARIGAN/AFP/Getty Images ( 524338573 )

Villagers who were evacuated from their homes following Mount Sinabung's eruption rest in a temporary shelter in Tiga Nderket, North Sumatra, Indonesia, Monday, Nov. 4, 2013. The 2,600-meter (8,530-foot) high volcano has been erupting since Sunday, unleashing volcanic ash high into the sky and forcing the evacuation of villagers living around its slope. (AP Photo/Binsar Bakkara) ( Indonesia Volcano )

Displaced residents rest in an evacuation shelter in Karo district on Sumatra island on November 4, 2013 as Mount Sinabung volcano in western Indonesia erupted twice on November 3 hurling red-hot ash and rocks up to seven kilometers into the air and forcing more than 1,000 people to flee their homes. Mount Sinabung on Sumatra island erupted in September for the first time in three years, forcing thousands to flee their homes, and has been erupting intermittently ever since. AFP PHOTO / KHARISMA TARIGAN/AFP/Getty Images ( 524338578 )