Stones erupted by the Japanese volcano Simmoe, flew up to a height of 4000 meters. Lava descended one side of the volcano, and from its peak, 1421 meters high, clouds of smoke rose.
The eruption passed into the explosive early Saturday morning. Volcanic activity may continue for several months, experts say.
The Japanese Meteorological Agency recommended that people do not approach the active volcano and warned local residents that stones may be blown from the Simmoe Crater.
Hundreds of people were forced to leave their homes when Simmoe exploded in 2011.