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

  • Volcano

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.

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.

Eruptive History

There is data available for 1 Holocene eruptive periods.

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

Deformation History

There is no Deformation History data available for Numazawa.

Emission History

There is no Emissions History data available for Numazawa.

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, and Geol Surv Japan, AIST,
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