A villager watches as Mount Sinabung volcano erupts, in Kuta Tengah village, Karo Regency in Indonesia's North Sumatra April 1, 2015. REUTERS/Y.T Haryono TPX IMAGES OF THE DAY

Mount Sinabung volcano erupts, as seen from Tiga Pancur village, Karo Regency in Indonesia's North Sumatra province October 8, 2014. Picture taken October 8, 2014. REUTERS/YT Haryono (INDONESIA - Tags: DISASTER ENVIRONMENT TPX IMAGES OF THE DAY) 

A woman in a village in Karo regency watches Mount Sinabung erupt in Indonesia's North Sumatra province October 8, 2014. The volcano, which has been active since September 2013, erupted in February, killing at least 15 people and forcing thousands to evacuate their homes on the western island of Sumatra. There have been no casualties reported from this latest eruption, which has been happening for the last
four days, according to local media. REUTERS/YT Haryono (INDONESIA - Tags: ENVIRONMENT DISASTER TPX IMAGES OF THE DAY) 

Mount Sinabung is seen during an eruption from Naman Teran village in Karo district, Indonesia's North Sumatra province, January 20, 2014. More than 26,000 villagers have been evacuated since authorities raised the alert status for the volcano to the highest level in November 2013, local media reported. REUTERS/Beawiharta (INDONESIA - Tags: DISASTER ENVIRONMENT TPX IMAGES OF THE DAY) 

Ash-covered motorcycles are pictured as rescue team members walk through ash during rescue operations after the Mount Sinabung eruption at Suka Meriah village in Karo, North Sumatra province February 2, 2014. Indonesia's Mount Sinabung volcano erupted and killed at least 11 people on the western island of Sumatra on Saturday, the first time it is known to have claimed any lives, a senior government official said. REUTERS/Tarmizy Harva (INDONESIA - Tags: DISASTER ENVIRONMENT TPX IMAGES OF THE DAY) 

Workers harvest cabbage as Mount Sinabung spews ash at Jraya village in Karo district, North Sumatra province February 5, 2014. Indonesia's Mount Sinabung volcano erupted and killed at least 11 people on the western island of Sumatra on Saturday, the first time it is known to have claimed any lives, a senior government official said. REUTERS/Beawiharta (INDONESIA - Tags: DISASTER ENVIRONMENT AGRICULTURE) 

A long exposure photo shows star trails as Mount Sinabung volcano spews hot lava as seen from Jraya village in Karo district, Indonesia's North Sumatra province, January 9, 2014. About 20,000 villagers have been evacuated since authorities raised the alert status for Sinabung to the highest level in November 2013, local media reported on Monday. REUTERS/YT Haryono (INDONESIA - Tags: DISASTER ENVIRONMENT) 

Hot lava from Mount Sinabung volcano hits trees as seen from Berastepu village in Karo district, Indonesia's North Sumatra province, January 8, 2014. About 20,000 villagers have been evacuated since authorities raised the alert status for Sinabung to the highest level in November 2013, local media reported on Monday. REUTERS/Beawiharta (INDONESIA - Tags: DISASTER ENVIRONMENT TPX IMAGES OF THE DAY) 

A hibiscus flower is seen on an ash-covered plant at Mardingding village in Karo district, Indonesia's north Sumatra province November 19, 2013. The volcano continued to emit volcanic ash on Monday, throwing an 8,000m (26,247 ft)-high plume into the atmosphere, as thousands of residents fearful of more eruptions remained in temporary shelters, according to local media. REUTERS/Roni Bintang (INDONESIA - Tags: DISASTER ENVIRONMENT TPX IMAGES OF THE DAY) FOR BEST QUALITY IMAGE SEE GF2EA3O0A9U01 

A man looks at Mount Sinabung spewing ash from Jraya village in Karo district, Indonesia's North Sumatra province, January 13, 2014. More than 25,000 villagers have been evacuated since authorities raised the alert status for the volcano to the highest level in November 2013, local media reported on Monday. REUTERS/Roni Bintang (INDONESIA - Tags: DISASTER ENVIRONMENT TPX IMAGES OF THE DAY) FOR BEST QUALITY IMAGE SEE GF2EA3O0A9A01 

A woman looks on as Mount Sinabung spews ash, as pictured from Sibintun village in Karo district, Indonesia's north Sumatra province November 18, 2013. Mount Sinabung continued to spew volcanic ash throwing a plume 8,000 meters into the atmosphere on Monday as thousands of residents remained in temporary shelters fearful of more eruptions, according to local media. REUTERS/Roni Bintang (INDONESIA - Tags: DISASTER ENVIRONMENT TPX IMAGES OF THE DAY) FOR BEST QUALITY IMAGE SEE GF2EA3O0A9K01 

A man holds his son while walking on dried corn with Mount Sinabung spewing ash in the background at Sibintun village in Karo district, Indonesia's North Sumatra province November 25, 2013. Indonesia ordered the evacuation of 15,000 residents near the active volcano in the west of the vast archipelago on Sunday as authorities raised the alert for the emergency to the highest level. REUTERS/Beawiharta (INDONESIA - Tags: DISASTER ENVIRONMENT TPX IMAGES OF THE DAY) 

Mount Sinabung spews ash as seen from Tiga Pancur village in Karo district, Indonesia's North Sumatra province, early morning November 25, 2013. Indonesia ordered the evacuation of 15,000 residents near the active volcano in the west of the vast archipelago on Sunday as authorities raised the alert for the emergency to the highest level. REUTERS/Roni Bintang (INDONESIA - Tags: DISASTER ENVIRONMENT TPX IMAGES OF THE DAY) 

Mount Sinabung spews ash as it is pictured from Simpang Empat village in Karo district, Indonesia's north Sumatra province, November 5, 2013. A volcano erupted for the third time in as many months on the western Indonesian island of Sumatra, forcing hundreds of villagers to evacuate, officials said. Mount Sinabung spewed a 7-km (4.3-mile) column of ash into the air on Sunday, prompting authorities to impose a 3-km evacuation radius. REUTERS/Roni Bintang (INDONESIA - Tags: ENVIRONMENT DISASTER) 

A mother holds her child as Mount Sinabung spews ash and hot lava during an eruption in Perteguhan village in Karo district, Indonesia's north Sumatra province, September 17, 2013. Mount Sinabung threw more volcanic ash into air, covering the surrounding areas on Tuesday, as authorities prepared more temporary shelters for evacuees. REUTERS/Roni Bintang (INDONESIA - Tags: DISASTER ENVIRONMENT TPX IMAGES OF THE DAY) 

Mount Sinabung volcano spews smoke in Suka Nalu village in the district of Tanah Karo, in Indonesia's North Sumatra province August 30, 2010. The Indonesian volcano that erupted for the first time in centuries on Sunday spewed fresh plumes of smoke early on Monday morning, causing panic in nearby villages and delaying local flights, officials said on Monday. REUTERS/Tarmizy Harva (INDONESIA - Tags: DISASTER ENVIRONMENT IMAGES OF THE DAY)