TRAVEL: 2014: The Year in Volcanic Activity

While this eerie landscape may look more akin to a distant planet or star, these pictures of a volcano spewing blue lava were captured in Indonesia courtesy of one of Earth's most spectacular natural phenomenons.

While the lava is usually an orange-red colour, the blue glow comes from flames produced when escaping sulphuric gases burn up inside the volcano in searing 600C heat.

The volcano, known as the Ijen Crater, is located in East Java and is used by miners who rely on the sulphur, which gives off toxic fumes, for their livelihoods.

The eerie blue glow atop an Indonesian volcano may look like something from a sci-fi film, but it is actually caused by sulphuric gases

Photographer Keow Wee Loong (pictured) snuck inside the volcano's grounds to take these otherworldly pictures of the Ijen Crater, on East Java

While the lava is usually an orange-red colour, the blue glow comes from flames produced when escaping sulphuric gases burn up inside the volcano in searing 600C heat

Miners, who work on Ijen despite the toxic fumes, rely on the spooky volcano for their livelihood, allowing the sulphur to cool before chipping it off

The incredible images were taken by brave photographer Keow Wee Loong, who snuck into the volcano's grounds under the cover of darkness earlier this month.

Miners have run ceramic pipes from vents in the side of the mountain to collection points inside a large crater where the molten chemical is left to cool before being broken up and carried away.

They work in treacherous conditions at the bottom of the crater, wearing nothing other than t-shirts and trousers as they collect the yellow material.

They must also avoid the deadly turquoise-blue lake which takes up most of the crater floor as it is made up of almost pure sulphuric acid and would instantly kill anyone unlucky enough to fall in.

Mr Loong, 26, stood just four feet away from the lava as it spewed from the crater, wearing a gas mask to deal with the toxic fumes.

'I was told by locals I wasn't allowed to go up to the crater because the toxic fumes are hazardous,' he said.

Loong, 26, stood just four feet away from the lava as it spewed from the crater, wearing a gas mask to deal with the toxic fumes

At first glance the otherworldly light in pictured by Mr Loong comes from a nebula or another planet deep in outer space

Miners have run ceramic pipes from vents in the side of the mountain to collection points inside a large crater

'They said there could be some dangerous volcanic activity.

'I had a full-face gas mask with me to protect myself - ignoring their warning - I and got in through a secret entrance.

'I was inside the crater for five hours and spent time photographing the amazing flame.

'A lot of people are amazed to see a volcano with blue flame in it.'

Determined to see its unique glow in person, Mr Loong made it into the volcano's grounds at nightfall earlier this month

While still a stunning sight, the sulphuric Ijen Crater is far less eerie when viewed in the light of day

Mount Sinabung, in Indonesia's North Sumatra province, has been erupting sporadically since last September, spewing massive clouds of superheated gas and ash into the sky and down its slopes in deadly pyroclastic flows. The most recent series of eruptions began January 4, with hundreds of eruptions recorded in the days since. Further evacuations have been ordered, with more than 20,000 people now displaced. Gathered here are recent images from the region and of those affected.

Mount Sinabung spews volcanic ash and lava near Karo, North Sumatra on January 9, 2014. An Indonesian volcano that has erupted relentlessly for months shot volcanic ash into the air 30 times on January 4, forcing further evacuations with more than 20,000 people now displaced, an official said. (ATAR/AFP/Getty Images)

A cat sits in an area covered by ash as following a further eruption of the Mount Sinabung in Sebintun village on January 9, 2014 in Karo District, North Sumatra, Indonesia. (Ulet Ifansasti/Getty Images) #

People watch as Mount Sinabung spews pyroclastic gas and ash on January 8, 2014 in North Sumatra, Indonesia. Eleven deaths have now been recorded as a result of the eruptions with hundreds more falling ill. Officials expect the number of evacuees to rise as volcanic activity remains high. (Ulet Ifansasti/Getty Images) #

Children wear plastic bags to cover their faces from ash following a further eruption of the Mount Sinabung on January 4, 2014 in North Sumatra. (Ulet Ifansasti/Getty Images) #

Hot lava runs down Mount Sinabung from a newly-formed lava dome on January 5, 2014 in North Sumatra.(Ulet Ifansasti/Getty Images) #

Sinabung spews ash into the air during an eruption near Karo, North Sumatra, on January 8, 2014.(Sutanta Aditya/AFP/Getty Images) #

A woman carries her daughter in a nearby field as Mount Sinabung spews pyroclastic gas and ash in North Sumatra, on January 4, 2014.(Ulet Ifansasti/Getty Images) #

Sinabung spews ash during an eruption near Karo, North Sumatra, on January 7, 2014. (Sutanta Aditya/AFP/Getty Images) #

Mount Sinabung volcano spews ash during an eruption as seen from Tiga Pancur village in Karo district, on January 6, 2014.(Reuters/Roni Bintang) #

Villagers watch as Mount Sinabung releases pyroclastic flow in Sibintun, North Sumatra, on January 6, 2014.(AP Photo/Binsar Bakkara) #

An ash covered a motorcyclist as drives on a road covered with ash following a further eruption of the Mount Sinabung, on January 4, 2014. (Ulet Ifansasti/Getty Images) #

Coffee beans, covered by ash from Mt Sinabung, near Sibintun village on January 9, 2014. (Reuters/Beawiharta) #

A bicycle is caked with volcanic ash from the eruption of Mount Sinabung outside a house in Sibintun, North Sumatra, on January 7, 2014. (AP Photo/Binsar Bakkara) #

Abandoned bottles covered with ash from Mount Sinabung, near Berastepu village, on January 9, 2014. (Reuters/Beawiharta) #

A farmer's foot, covered with ash from Mount Sinabung, in Payung village, on January 9, 2014. (Reuters/Beawiharta) #

Mount Sinabung spews pyroclastic gas and ash above Karo District, North Sumatra, on on January 3, 2014.(Ulet Ifansasti/Getty Images) #

Hot lava runs down Mount Sinabung from a newly-formed lava dome, on January 4, 2014. (Ulet Ifansasti/Getty Images) #

A dead dog lies on a street covered in ash from Mount Sinabung, near Tiga Pancur village, on January 8, 2014.(Reuters/YT Haryono) #

A woman shows rice covered by ash during harvest following a further eruption of Mount Sinabung in Payung village, on January 9, 2014.(Ulet Ifansasti/Getty Images) #

An orange, covered in ash from Mount Sinabung, Sibintun village, January 10, 2014. (Reuters/Roni Bintang) #

A chicken stands in an area covered by ash as following a further eruption of Mount Sinabung in Sebintun village, on January 9, 2014.(Ulet Ifansasti/Getty Images) #

Mount Sinabung spews ash into the air, as seen from Karo, North Sumatra, on December 4, 2013. (Ade Sinuhaji/AFP/Getty Images) #

Elementary school students wear masks to protect them from volcanic ash from Mount Sinabung, seen in the background, in Sukan Debi, North Sumatra, on November 26, 2013. (AP Photo/Binsar Bakkara) #

A pyroclastic flow races down the slope of Mount Sinabung, viewed from Berastepu village, on January 10, 2014.(Reuters/Beawiharta) #

Women carry their children as they are evacuated to a temporary evacuation center after their village was hit by ash from Mount Sinabung in Payung village, on January 8, 2014. (Ulet Ifansasti/Getty Images) #

Villagers evacuate their pig following a further eruption of Mount Sinabung in Sebintun village, on January 9, 2014.(Ulet Ifansasti/Getty Images) #

Hot lava runs down Mount Sinabung from a lava dome on January 5, 2014 in Karo District, North Sumatra.(Ulet Ifansasti/Getty Images) #

A pyroclastic flow races down Mount Sinabung, near Karo, North Sumatra, on January 8, 2014.(SUTANTA ADITYA/AFP/Getty Images) #

Hot gases and ash from Mount Sinabung impact trees, viewed from Berastepu village, North Sumatra, on January 8, 2014.(Reuters/Beawiharta) #

A flower, surrounded by ash from Mt Sinabung, near Sibintun village, on January 9, 2014.

A woman looks on as Mount Sinabung spews ash, viewed from Sibintun village in Karo district, Indonesia's north Sumatra province, on 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. (Reuters/Roni Bintang)

Indonesian farmers rush to harvest crops in the district of Karo as an ash cloud rises during a fresh eruption of the Mount Sinabung volcano, on September 17, 2013. Thousands of villagers fled after Mount Sinabung's series of volcanic eruptions on Indonesia's Sumatra island, spewing rocks and red-hot ash onto surrounding villages, officials said. (Sutanta Aditya/AFP/Getty Images) #

Trees and vegetation are covered with volcanic ash in the Karo district of Indonesia's Sumatra island, on November 5, 2013, after the eruption of Mount Sinabung volcano. (Kharisma Tarigan/AFP/Getty Images) #

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, on November 6, 2013. (AP Photo/Binsar Bakkara) #

This picture made with slow shutter speed shows Mount Sinabung spewing volcanic ash as seen from Tiga Pancur, North Sumatra, on November 5, 2013. (AP Photo/Binsar Bakkara) #

Sinabung erupts and throws hot gas into the air, in Karo, North Sumatra, on November 6, 2013. Hundreds of residents have been evacuated to safer areas as the volcano erupted anew following September eruptions. (Atar/AFP/Getty Images) #

A hand print on the hood of a car covered with volcanic ash from the eruption of Mount Sinabung in Tiga Nderket village, North Sumatra, on November 4, 2013. (AP Photo/Binsar Bakkara) #

Refugees sleep inside a church set up as a temporary evacuation center on November 15, 2013 in Karo district. Up to 4,300 residents have been evacuated from five villages in North Sumatra due to the volcanic eruptions of Mount Sinabung.(Ulet Ifansasti/Getty Images) #

Pyroclastic flows race down the slope of Mount Sinabung as it spews volcanic materials, viewed from Beras Tiga Pancur, North Sumatra, on November 11, 2013. (AP Photo/Dedy Zulkifli) #

Villagers ride a motorcycle on a road covered with volcanic ash from the eruption of Mount Sinabung in Kuta Mbaru, North Sumatra, on November 18, 2013. (AP Photo/Mafa Yuli Ramadani) #

Students wear masks to protect from airborne volcanic ash, as they play with hula hoops at an elementary school in Sukandebi, North Sumatra, on November 7, 2013. (AP Photo/Binsar Bakkara) #

Students walk through fields covered by ash from Sinabung, as they return home at Kuta Rakyat village in Karo district, on November 8, 2013. (Reuters/Roni Bintang) #

A flower blossoms from vegetation covered with volcanic ash after an eruption of Mount Sinabung in Mardingding, North Sumatra, on November 6, 2013. (AP Photo/Binsar Bakkara) #

A man uses his mobile phone as Mount Sinabung continues to erupt, with hot gas spewing from the volcano, in the Karo district, on November 18, 2013. (Sutanta Aditya/AFP/Getty Images) #

The ash from Sinabung volcano covers trees and houses at Mardingding village in Karo district, on November 5, 2013.(Reuters/Roni Bintang) #

A puppy sits in abandoned Mardinding village, located just less than three kilometers from mount Sinabung on November 15, 2013 in Sumatra's Karo district. (Ulet Ifansasti/Getty Images) #

Mount Sinabung spews ash and gas, photographed from Berastagi village in Karo district, on November 14, 2013.(Ulet Ifansasti/Getty Images) #

Mount Sinabung spews a column of hot gas and ash skyward, as seen from Tigapancur village in Karo district, on November 14, 2013.(Ulet Ifansasti/Getty Images) #

Lightning strikes as Mount Sinabung volcano spews ash and hot lava, at Simpang Empat village in Karo district, on September 18, 2013.(Reuters/YT Haryono)

2014: The Year in Volcanic Activity

Once again, it has been a particularly eventful year for the world's volcanoes. Out of an estimated 1,500 active volcanoes, 50 or so erupt every year, spewing steam, ash, toxic gases, and lava. In 2014, erupting volcanoes included Mount Sinabung, Mount Kelud, and Sangeang Api in Indonesia, Bardarbunga in Iceland, Mount Ontake in Japan, Tungurahua in Ecuador, Pico do Fogo in Cape Verde, Mount Etna and Stromboli in Italy, Pavlof in Alaska, and Kilauea in Hawaii. Collected below are scenes from the wide variety of volcanic activity on Earth over the past year.

Mount Sinabung spews pyroclastic gas and ash, seen from Tiga Pancur village on October 13, 2014 in Berastagi, Karo district, North Sumatra, Indonesia. Mount Sinabung, which has lain dormant for over 400 years, has been intermittently erupting since September 15 last year, killing dozens and forcing thousands to flee their homes. (Ulet Ifansasti/Getty Images)

Lava explodes from the Pico do Fogo volcano next to the village of Portela on Fogo Island, Cape Verde, on November 28, 2014. Molten lava from the volcano in the Cape Verde archipelago slid towards the town of Cha das Caldeiras on Thursday, threatening to destroy it and a nearby village four days after an initial eruption. (Reuters/Saulo Montrond) #

A giant cloud of ash and steam rise from erupting Sangeang Api volcano seen from Bima town on Sumbawa island, Indonesia, on May 30, 2014. Flights into and out of the northern Australian city of Darwin were cancelled May 31, and some to Bali affected, after huge ash clouds were thrown up by the volcano. (Andy Amaldan/AFP/Getty Images) #

Steam and ash rise from the Bardarbunga volcano in southeast Iceland on September 14, 2014. The Bardarbunga volcano system has been rocked by hundreds of tremors daily since mid-August, prompting fears the volcano could explode. Bardarbunga, at 2,000 meters (6,500 feet), is Iceland's second-highest peak and is located under Europe's largest glacier, Vatnajoekull.(Bernard Meric/AFP/Getty Images) #

An aerial picture taken on September 14, 2014 shows lava flowing out of the Bardarbunga volcano in southeast Iceland.(Bernard Meric/AFP/Getty Images) #

A plane flies over the Bardarbunga volcano spewing lava and steam in southeast Iceland on September 14, 2014.(Bernard Meric/AFP/Getty Images) #

Smoke rises from the lava eruption on Holuhraun, northwest of the Dyngjujoekull glacier in Iceland, on September 1, 2014. Lava fountains danced along a lengthy volcanic fissure near Iceland's subglacial Bardarbunga volcano, prompting authorities to raise the aviation warning code to the highest level and close the surrounding airspace. (AP Photo/Eggert Johannesson) #

Volcanic ash covers a plane and the airport of Solo in Central Java about 150 kilometers (93 miles) west of Mount Kelud volcano on February 14, 2014. Several people were been crushed to death after a volcanic eruption blanketed rooftops with rocks and ash, causing homes to cave in, an official said on February 14. (AFP/Getty Images) #

Residents evacuate under a massive plume of hot ash clouds spewing from Mount Kelud volcano as seen from Malang district in East Java province on February 14, 2014. (Aman Rochman/AFP/Getty Images) #

The Tungurahua volcano throws ash and stones during an eruption seen from Banos, Ecuador, on August 31, 2014. The volcano entered an eruptive phase in 1999 and continues to this day. (AP Photo/Dolores Ochoa)) #

In this April 4, 2014 photo, the Tungurahua volcano spews a column of ash as seen from Ambato, Ecuador. The volcano spewed a miles high column of ash after a powerful explosion that shot pyroclastic material onto its northern and northwestern flanks. (AP Photo) #

Lava from the Stromboli volcano flows into the sea, on August 9, 2014. Stromboli, one of Europe's most active volcanoes, is part of the seven-island Eolian Archipelago just off Sicily in southern Italy. (Giovanni Isolino/AFP/Getty Images) #

Lava from the Stromboli volcano explosively meets the sea on August 9, 2014. (Giovanni Isolino/AFP/Getty Images) #

This photo taken on March 22, 2014 shows the blue flame of burning sulfur at the crater of the Kawah Ijen volcano in Banyuwangi regency, East Java province. The natural phenomenon which can be seen at night is caused by sulfuric gases from the volcano which can ignite into blue flames. (Sonny Tumbelaka/AFP/Getty Images) #

This Photo taken on February 1, 2014 shows a miner carrying blocks of sulfur from Ijen crater in Banyuwangi East Java. A miner can weigh from 45 to 90kg and might make as many as two or three trips in a day. The sulfur is then used for vulcanizing rubber, bleaching sugar and other industrial processes. (Sonny Tumbelaka/AFP/Getty Images) #

A plume of smoke from Alaska's Pavlof volcano on the lower Alaska peninsula is pictured in this November 15, 2014 NASA satellite image. By November 15, Pavlof was lofting ash plumes to an altitude of 30,000 feet (9 kilometers), high enough to disrupt commercial airline flights. (Reuters/NASA) #

A picture taken on June 21, 2014 shows lava flowing out of the Piton de la Fournaise volcano, one of the world's most active volcanoes, located on the French island of Reunion in the Indian Ocean. The Piton de la Fournaise started to erupt early on June 21.(Richard Bouhet/AFP/Getty Images) #

A pyroclastic flow races down the side of Mount Sinabung during an eruption near Karo, North Sumatra on January 7, 2014.(Sutanta Aditya/AFP/Getty Images) #

Two boys wear plastic bags to cover their face from ash following a further eruption of Mount Sinabung on January 4, 2014 in Karo District, North Sumatra. (Ulet Ifansasti/Getty Images) #

A long exposure photograph taken late on October 9, 2014 shows scorching lava flow and giant ash clouds released from the crater during the eruption of Mount Sinabung volcano as seen from Karo district of Sumatra island. (Sutanta Aditya/AFP/Getty Images) #

Wind funnels appear over the volcanic ash-covered landscape in Berastepu village, in the district of Karo near Mount Sinabung on January 26, 2014. (Sutanta Aditya/AFP/Getty Images) #

A photographer runs as Mount Sinabung erupts with ash clouds, as seen from Karo District on Sumatra island on October 25, 2014. Super-heated ash clouds reaching two kilometers into the air spewed from the crater of Mount Sinabung volcano threatening villages during its recent series of eruptions. (Sutanta Aditya/AFP/Getty Images) #

A cat sits in an area covered by ash as following an eruption of Mount Sinabung in Sebintun village on January 9, 2014 in Karo District, North Sumatra. (Ulet Ifansasti/Getty Images) #

This long exposure photograph taken before dawn on October 14, 2014 shows sparks of lightning, scorching lava flow and giant ash clouds released from the crater during the eruption of Mount Sinabung on Sumatra island. (Sutanta Aditya/AFP/Getty Images) #

Nine months after a new island broke through the surface of the western Pacific Ocean, the volcanic eruption at Nishino-shima continues. The tiny new volcanic island ("Niijima" in Japanese) merged into Nishino-shima last winter and continued to grow. Steady flows of lava are enlarging the merged island, which is now 1.39 square kilometers (0.54 square miles). The Operational Land Imager on Landsat 8 captured this image of Nishino-shima on August 21, 2014. (NASA/USGS) #

Lava flows from Mount Etna on the southern Italian island of Sicily near Catania on August 14, 2014. Mount Etna is one of the most active volcanoes in the world and is in an almost constant state of activity. (Tiziana Fabi/AFP/Getty Images) #

A cloud of ash and vapor spewed by the Tungurahua volcano can be seen from the city of Riobamba, Ecuador, on February 1, 2014.(AFP/Getty Images) #

Steam and volcanic gases rise from Mount Ontake on September 27, 2014. The volcano, a a popular tourist attraction, erupted suddenly on September 27, catching several hundred climbers offguard. 57 people were killed, buried beneath the ash. (Reuters/Kyodo) #

Climbers descend Mount Ontake, fleeing volcanic ash on September 27, 2014. (Reuters/Kyodo) #

Japan Self-Defense Force soldiers and firefighters work among mountain lodges covered with volcanic ash near the peak of Mount Ontake on September 28, 2014. (Reuters/Kyodo) #

A hiker is lifted by a rescue helicopter during a rescue operation on Mount Ontake on September 28, 2014. (Reuters/Kyodo) #

Firefighters carry a hiker trapped in the summit area of Mount Ontake during Saturday's initial eruption in central Japan, on September 28, 2014. (AP Photo/Tokyo Fire Department) #

In this September 1, 2014 photo, fluid lava streams from the June 27 lava flow from the Kilauea volcano in Pahoa, Hawaii. The June 27 lava flow is named for the date it began erupting from a new vent. The Hawaiian Volcano Observatory issued warnings to Pahoa, in the path of a lava flow on Hawaii's Big Island, as the molten rock moved to within a mile of homes. Kilauea has been erupting continuously for more than 31 years. (AP Photo/U.S. Geological Survey) #

Lava from an upstream lobe of the June 27 lava flow overcomes a fence marking a private property line near the town of Pahoa, Hawaii, on October 31, 2014. (AP Photo/U.S. Geological Survey) #

Lava flow from the Kilauea Volcano passes through a fence to the Pahoa transfer station in Pahoa, Hawaii, on November 16, 2014.(AP Photo/U.S. Geological Survey) #

Lava flows on a dirt road past a protected utility pole, a result of the Kilauea Volcano eruption and lava flow. (FEMA/Kelly Hudson) #

September 1, a closer look at the stream of lava from Kilauea, pouring into a deep ground crack. (Tim Orr/USGS HVO) #

The June 27 lava flow covers most of Pahoa Cemetery on October 26, 2014. (County of Hawaii) #

A melted enclosure containing a time lapse camera that USGS Hawaii Volcano Observatory scientists were using to monitor a lava tube skylight near the town of Pahoa on the Big Island of Hawaii on November 7, 2014. The camera was caught in an overflow of lava surrounding the tripod that melted the power cable and the camera's container. Hawaii County civil defense officials said in a statement Saturday the lava's front remains about 480 feet from Pahoa Village Road. This position hasn't changed since October 30. But lava is creeping out at several spots upslope of the leading edge. (AP Photo/U.S. Geological Survey) #

Turrialba volcano, located in the Costa Rican province of Cartago, about 35km southwest of San Jose, spews ash on November 1, 2014. The eruption was the largest in the last 150 years, according to the National University of Costa Rica.(Ezequiel Becerra/AFP/Getty Images)

Japan's Mount Ontake volcano erupted without warning, surprising several hundred nearby hikers. Plumes of volcanic gas and ash overtook the fleeing hikers and buried nearby lodges and outbuildings. Though most of the people on Mount Ontake that day were able to escape. 40 suffered significant injuries and at least 36 bodies have been found so far, according to Japanese authorities. More than 24 bodies remain at the summit, and recovery crews have been unable to return, wary of more activity from Ontake as tremors continue to shake the region.

Climbers descend Mount Ontake as the volcano erupts in central Japan on September 27, 2014, in this photo taken by a climber and released by Kyodo. The volcano erupted on Saturday, killing at least 36 people, officials and media said. The Japan Meteorological Agency said the volcano, 200 km (125 miles) west of Tokyo, erupted just before midday and sent ash pouring down the mountain's south slope for more than 3 km (2 mi). Mandatory credit. (Reuters/Kyodo)

A helicopter (right) flies above mountain lodges covered with volcanic ash near a crater of Mount Ontake billowing steam and ash, on September 27, 2014. (Reuters/Kyodo) #

Climbers descend Mount Ontake as volcanic ash falls on September 27, 2014, in this photo taken by a climber and released by Kyodo.(Reuters/Kyodo) #

Climbers descend Mount Ontake, fleeing volcanic ash on September 27, 2014. (Reuters/Kyodo) #

Dense fumes spew from several vents on the slope of Mount Ontake as the volcano erupts on September 27, 2014.(AP Photo/Yomiuri Shimbun, Toshihiko Kawaguchi) #

Japan Ground Self-Defense Force personnel and firefighters climb the ash-covered slope of Mount Ontake to rescue people who have been trapped in the mountaintop lodge during the eruption, one day after the volcano became active in central Japan, on September 28, 2014. (AP Photo/The Japan Ground Self-Defense Force) #

This aerial picture taken on September 28, 2014 shows a helicopter of Japan's Self Defense Force lifting a survivor from volcanic ash-covered slope of Mount Ontake. (JIJI PRESS/AFP/Getty Images) #

Steam and volcanic gases rise from Mount Ontake on September 27, 2014. (Reuters/Kyodo) #

A military helicopter hovers above Mount Ontake as it prepares to rescue stranded climbers on September 28, 2014. Military helicopters plucked several people from the Japanese mountainside Sunday after a spectacular volcanic eruption. (AP Photo/Koji Ueda) #

Mountain lodges, covered with volcanic ash are seen near a crater of Mount Ontake on September 27, 2014. (Reuters/Kyodo) #

Japan Self-Defense Force soldiers run after landing in a helicopter for a rescue operation near the peak of Mount Ontake on September 29, 2014. (Reuters/Joint Staff of the Defence Ministry of Japan) #

Japan Self-Defense Force soldiers and firefighters work among mountain lodges covered with volcanic ash near the peak of Mount Ontake on September 28, 2014. (Reuters/Kyodo) #

A hiker is lifted by a rescue helicopter during a rescue operation on Mount Ontake on September 28, 2014. (Reuters/Kyodo) #

Soldiers and police officers prepare a rescue operation near the peak of Mount Ontake on September 29, 2014. (Reuters/Kyodo) #

JSDF soldiers and firefighters rescue an injured person from an ash-covered mountain lodge on September 28, 2014.(Reuters/Kyodo) #

An injured person is lifted by a rescue helicopter from Mount Ontake on September 28, 2014. More than 500 Japanese military and police deployed on Sunday to search the peak of the volcano a day after its sudden eruption trapped hundreds. (Reuters/Kyodo) #

Steam and ash rise from a crater atop Mount Ontake on September 29, 2014. (Reuters/Kyodo) #

JSDF soldiers and firefighters conduct rescue operations on September 28, 2014. (Reuters/Kyodo) #

A Japanese Ground Self-Defense Force CH-47 helicopter sits on the ground as Mount Ontake continues to erupt in Nagano Prefecture, central Japan, on September 30, 2014. Increased seismic activity raised concern Tuesday about the possibility of another eruption at a Japanese volcano where dozens people were killed, forcing rescuers to suspend plans to try to recover at least two dozen bodies still near the summit. (AP Photo/Koji Ueda)