Ash spews from Mount Sinabung volcano during eruption as seen from Beras Tepu village in Karo Regency, North Sumatra province, Indonesia June 29, 2015. More than 10,000 people from 12 villages, who are living around the slopes of Mount Sinabung, left their homes and moved to refugee camps, local media reported. REUTERS/Beawiharta TPX IMAGES OF THE DAY

Ash spews from Mount Sinabung volcano during an eruption as seen from Kuta Tengah village in Karo Regency, North Sumatra province, Indonesia June 28, 2015. More than 10,000 people from 12 villages, who are living around the slopes of Mount Sinabung, left their homes and moved to refugee camps, local media reported. REUTERS/Beawiharta 

Lava flows from Mount Sinabung volcano during an eruption as seen from Tiga Serangkai village in Karo Regency, North Sumatra province, Indonesia June 27, 2015. More than 10,000 people from 12 villages, who were living around the slopes of Mount Sinabung, left their homes and moved to refugee camps, local media reported. REUTERS/Beawiharta TPX IMAGES OF THE DAY

Lava flows from Mount Sinabung volcano during an eruption as seen from Tiga Serangkai village in Karo Regency, North Sumatra province, Indonesia June 26, 2015. More than 10,000 people from 12 villages, who were living around the slopes of Mount Sinabung, left their homes and moved to refugee camps, local media reported. Picture taken June 26, 2015. REUTERS/Beawiharta 

Hot lava flows from Mount Sinabung volcano during eruption as seen from Tiga Serangkai village in Karo Regency, North Sumatra province, Indonesia June 24, 2015. More than 10,000 people from 12 villages, who are living around the slopes of Mount Sinabung, left their homes and moved to refugee camps, local media reported on Friday. REUTERS/Beawiharta 

Tree trunks are pictured as ash spews from Mount Sinabung volcano in the danger zone area at the empty village of Bekerah in Karo Regency, North Sumatra province, Indonesia, June 25, 2015. More than 10,000 people from 12 villages, who are living around the slopes of Mount Sinabung, left their homes and moved to refugee camps, local media reported. REUTERS/Beawiharta 

Women give out face masks to people as ash from Mounth Sinabung volcano falls on the town of Brastagi, North Sumatra province, Indonesia, June 25, 2015. Indonesia's Mount Sinabung erupted on Thursday, leading to volcanic ash spewing as high as 3500 meters into the air and blanketing a nearby town. REUTERS/Beawiharta 

Hot lava flows from Mount Sinabung volcano during eruption as seen from Tiga Serangkai village in Karo Regency, North Sumatra province, Indonesia June 25, 2015. More than 10,000 people from 12 villages, who are living around the slopes of Mount Sinabung, left their homes and moved to refugee camps, local media reported on Friday. REUTERS/Beawiharta TPX IMAGES OF THE DAY TPX IMAGES OF THE DAY

The ruins of the health centre are seen as Mount Sinabung volcano spews ash at the danger zone area in the empty village of Bekerah, in Karo Regency, North Sumatra province, Indonesia June 25, 2015. More than 10,000 people from 12 villages, who are living around the slopes of Mount Sinabung, left their homes and moved to refugee camps, local media reported. REUTERS/Beawiharta 

A family sit inside a car as they prepare to leave a danger zone area, as ash spews from Mount Sinabung volcano during an eruption at Tiga Serangkai village in Karo Regency, North Sumatra province, Indonesia June 24, 2015. More than 10,000 people from 12 villages, who are living around the slopes of Mount Sinabung, left their homes and moved to refugee camps, local media reported on Friday. REUTERS/Beawiharta TPX IMAGES OF THE DAY

Ash spews from Mount Sinabung, as seen from Perteguhan village in Karo Regency, Indonesia's North Sumatra province, June 20, 2015. More than 10,000 people from 12 villages around the slopes of Mount Sinabung left their homes and moved to refugee camps, local media reported on Friday. REUTERS/Beawiharta

Hot lava flows from Mount Sinabung volcano during an eruption in the danger zone area at the empty village of Bekerah in Karo Regency, North Sumatra province, Indonesia, June 25, 2015. More than 10,000 people from 12 villages, who are living around the slopes of Mount Sinabung, left their homes and moved to refugee camps, local media reported. REUTERS/Beawiharta 

Hot lava flows from Mount Sinabung volcano during eruption as seen from Tiga Serangkai village in Karo Regency, North Sumatra province, Indonesia June 25, 2015. More than 10,000 people from 12 villages, who are living around the slopes of Mount Sinabung, left their homes and moved to refugee camps, local media reported on Friday. REUTERS/Beawiharta 

A resident reacts as Mount Sinabung volcano spews ash during an eruption at Tiga Serangkai village in Karo Regency, North Sumatra province, Indonesia, June 24, 2015. More than 10,000 people from 12 villages, who are living around the slopes of Mount Sinabung, left their homes and moved to refugee camps, local media reported on Friday. REUTERS/Beawiharta 

Mount Sinabung volcano spews hot lava as seen from Beras Tepu Village in Karo Regency, North Sumatra province, Indonesia June 23, 2015. More than 10,000 people from 12 villages, who are living around the slopes of Mount Sinabung, left their homes and moved to refugee camps, local media reported on Friday. REUTERS/Beawiharta 

A child covers his face with a plastic bag, as ash from Mounth Sinabung volcano hits the town of Brastagi, North Sumatra province, Indonesia, June 25, 2015. Indonesia's Mount Sinabung erupted on Thursday, leading to volcanic ash spewing as high as 3500 meters into the air and blanketing a nearby town. REUTERS/Beawiharta TPX IMAGES OF THE DAY

Abandoned houses are seen as ash spews from Mount Sinabung volcano at the danger zone area in the empty village of Bekerah in Karo Regency, North Sumatra province, Indonesia, June 25, 2015. More than 10,000 people from 12 villages, who are living around the slopes of Mount Sinabung, left their homes and moved to refugee camps, local media reported. REUTERS/Beawiharta 

Mount Sinabung volcano spews hot lava as seen from an empty village inside the danger zone area at Beras Tepu Village in Karo Regency, North Sumatra province, Indonesia June 23, 2015. More than 10,000 people from 12 villages, who are living around the slopes of Mount Sinabung, left their homes and moved to refugee camps, local media reported on Friday. REUTERS/Beawiharta TPX IMAGES OF THE DAY

Mount Sinabung volcano spews hot lava as seen from Jeraya Village in Karo Regency, North Sumatra province, Indonesia June 23, 2015. More than 10,000 people from 12 villages, who are living around the slopes of Mount Sinabung, left their homes and moved to refugee camps, local media reported. REUTERS/Beawiharta TPX IMAGES OF THE DAY

Mount Sinabung volcano erupts near Kuta Tonggal village in Karo Regency, North Sumatra province, Indonesia, June 24, 2015. More than 10,000 people from 12 villages, who are living around the slopes of Mount Sinabung, left their homes and moved to refugee camps, local media reported. REUTERS/Beawiharta 

Mount Sinabung volcano spews hot lava as seen from an empty village inside the danger zone area at Beras Tepu Village in Karo Regency, Indonesia's North Sumatra province, June 21, 2015. More than 10,000 people from 12 villages, who are living around the slopes of Mount Sinabung, left their homes and moved to refugee camps, local media reported on Friday. REUTERS/Beawiharta TPX IMAGES OF THE DAY

A tree is pictured as ash spews from Mount SInabung volcano in the danger zone area near the empty village of Bekerah in Karo Regency, North Sumatra province, Indonesia, June 25, 2015. More than 10,000 people from 12 villages, who are living around the slopes of Mount Sinabung, left their homes and moved to refugee camps, local media reported. REUTERS/Beawiharta 

Residents react as ash spews form Mount Sinabung volcano during eruption at Tiga Serangkai village in Karo Regency, North Sumatra province, Indonesia June 24, 2015. More than 10,000 people from 12 villages, who are living around the slopes of Mount Sinabung, left their homes and moved to refugee camps, local media reported. REUTERS/Beawiharta 

Mount Sinabung volcano spews ash as seen from Tiga Serangkai village in Karo Regency, Indonesia's North Sumatra province, June 20, 2015. More than 10,000 people from 12 villages, who are living around the slopes of Mount Sinabung, left their homes and moved to refugee camps, local media reported on Friday. REUTERS/Beawiharta

Mount Sinabung volcano erupts, as seen from Tiga Serangkai village in Karo Regency, North Sumatra province, Indonesia June 24, 2015. More than 10,000 people from 12 villages, who are living around the slopes of Mount Sinabung, left their homes and moved to refugee camps, local media reported. REUTERS/Beawiharta 

A resident stands on his cabbage field as Mount Sinabung volcano spews ash, as seen from Pintu Besi village in Karo Regency, Indonesia's North Sumatra province, June 19, 2015. More than 10,000 people from 12 villages, who are living around the slopes of Mount Sinabung, left their homes and moved to refugee camps, local media reported on Friday. REUTERS/Beawiharta TPX IMAGES OF THE DAY

Ash spew from Mount Sinabung as seen from Perteguhan Village in Karo Regency, Indonesia's North Sumatra province, June 18, 2015. REUTERS/Beawiharta