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 buried structures at the archaeological site.

Photo by Tom Simkin, 1993 (Smithsonian Institution).

This image is made available under the Public Domain Dedication CC0 license, but proper attribution is appreciated.

Keywords: lava dome | stratovolcano | human impacts

Harunasan