The Onioshidashi lava flow on the N flank of Asamayama volcano was erupted at the end of the last major eruption in 1783. Asamayama has a historical record dating back more than 1,300 years. The summit peak of Maekakeyama in the center was constructed within a horseshoe-shaped crater whose rim appears on the horizon to the far-right.

Photo by Richard Fiske, 1961 (Smithsonian Institution).

Keywords: lava flow

Asamayama