Photos and captions courtesy of Dr. Kayoko Suga, Metropolitan Tokyo Government, Japan.
Left Photo: Oshima viewed from west. Right Photo: Mihara-yama. The active cinder cone in the caldera. Mihara-yama was formed by the 1777-1778 eruption of Oshima. The black solidifed lava on the slope is the 1986 lava flow.
Both photos: The 1986 lava and thick scoria from the fissure in the caldera, northeastern part of the caldera floor.