Aso

Kometsuka scoria cone, on the NW side of the central cone complex of Aso volcano on the island of Kyushu, was constructed about 1800 years ago. Explosive eruptions building the cinder cone were accompanied by lava flows that traveled down the flank of this complex of stratovolcanoes in the center of Aso caldera. A broad moat separates the central cone complex from the caldera walls, which form the horizon.