World Map › Ioto
Volcano
Ioto
Caldera · 172 m · Japan
Ioto sits on the Philippine Sea Plate, in a subduction zone. 33 eruptions are known since the end of the last ice age, the most recent in 2025.
- Elevation
- 172 m
- Type
- Caldera
- Tectonic Setting
- Subduction zone
- Dominant Rock
- Trachyandesite / Basaltic Trachyandesite
- Plate
- Philippine Sea Plate
- Country
- Japan
- Last Eruption
- 2025
- Known Eruptions (Holocene)
- 33
- Max. Explosivity (VEI)
- 1
Eruption Timeline
Each bar is an eruption; its height shows its explosivity (VEI 0 to 8).
Eruption Uncertain Date
Sources : Global Volcanism Program, 2026. Volcanoes of the World (v. 5.4.0; 7 Aug 2026), Smithsonian Institution, doi:10.5479/si.GVP.VOTW5-2026.5.4 (volcano.si.edu) · NOAA NCEI · USGS · Wikidata