Global Volcanism Program | Image GVP-02022
Harunasan volcano has an irregular profile, seen here from an archaeological site to the ENE. The peak to the left-center is Futatsudake lava dome, the source of two large explosive eruptions during the 5th and 6th centuries. Tephra layers from both Harunasan and Asamayama volcanoes buried structures at the archaeological site.
Photo by Tom Simkin, 1993 (Smithsonian Institution).