Climbers feared trapped or dead in this sudden volcano eruption in Japan
This picture taken on September 27, 2014 shows white smoke rising from Mount Ontake as Japan's volcano Ontake erupts in Nagano prefecture, central Japan. Dozens of hikers were stranded on the slopes of an erupting Japanese volcano that has reportedly killed one person and left 30 more seriously injured. The eruption of the 3,067-metre Mount Ontake straddling Nagano and Gifu prefecture happened around midday.AFP PHOTO / MINISTRY OF LAND, INFRASTRUCTURE AND TRANSPORT CHUBU REGIONAL DEVELOPMENT BUREAU via JIJI PRESS
This picture shows a smoke rising from the 10,121-foot Mount Ontake in Nagano prefecture on September 28, 2014. The volcano erupted in central Japan on September 27, shooting ash and rocks into the air that reportedly left eight hikers injured and forced 150 people to shelter in cabins near the summit. AFP PHOTO / KAZUHIRO NOGI
Japan's Self Defense Force helicopter lifting an injured climber from the ash covered top of Mount Ontake at Nagano prefecture, one day after Japan's volcano Ontake erupted in central Japan, which straddling Nagano and Gifu prefecture. The grisly operation resumed to recover bodies after at least 31 people were believed killed when a Japanese volcano eruptedAFP PHOTO / JOINT STAFF
This picture taken by climber Junko Kumada on September 27, 2014 shows climbers evacuating from Mount Ontake as Japan's volcano as Mount Ontake erupted in Nagano prefecture, central Japan. AFP PHOTO / JIJI PRESS / JUNKO KUMADA JAPAN OUT
This year saw many volcanoes erupting or in the danger of erupting. Can you recall which ones? Philippines, Indonesia, Iceland and now Japan. What could be the reasons?
Also, check out some amazing images of volcanic activity by clicking here.