10-km-wide lava dome found growing under Japan supervolcano
Japanese researchers have discovered evidence of a giant dome of lava growing under the Kikai supervolcano that erupted 7,300 years ago. Scientists say a possible eruption could kill about 100 million people and trigger a 'volcanic winter' as its debris would block out the Sun. They further stated the likelihood of an eruption was 1% in the next 100 years.