Numazawa

Photo of this volcano
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 37.444°N
  • 139.566°E

  • 835 m
    2739 ft

  • 283151
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Numazawa.

The Global Volcanism Program has no Weekly Reports available for Numazawa.

The Global Volcanism Program has no Bulletin Reports available for Numazawa.

Eruptive History


Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).


Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
3400 BCE (?) Unknown Confirmed 5 Radiocarbon (corrected)

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.

Photo Gallery


Numazawa caldera lake is viewed from its NE shore with a 40,000 year old lava dome forming the right horizon. The 1.5 x 2 km caldera was formed about 5000 years ago during the eruption of the Numazawako Pumice Flow and plinian airfall deposit. The small Numazawa caldera was constructed within an older Pliocene caldera.

Copyrighted photo by Tadahide Ui (Japanese Quaternary Volcanoes database, RIODB, http://riodb02.ibase.aist.go.jp/strata/VOL_JP/EN/index.htm and Geol Surv Japan, AIST, http://www.gsj.jp/).
See title for photo information.

Smithsonian Sample Collections Database


There are no samples for Numazawa in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.

Affiliated Sites