Ioto, Japan

Caldera · 169 m (554 ft) · Volcano Is-Japan

Ioto is a caldera in Japan, 169 m (554 ft) high. Its last known eruption: 1964 or later. NOAA records no significant eruption here.

Ioto on the map

Ioto and the volcanoes within 300 km, colored by when each last erupted.

Since 1964
1900 to 1963
1800s
AD 1 to 1799
Before AD 1, or undated

Open the live map with volcanic ash advisories

The volcano

Type: Caldera
Elevation: 169 m (554 ft)
Country: Japan
Region: Volcano Is-Japan
Summit: 24.751° N, 141.289° E
Last known eruption: 1964 or later
Holocene activity known from: Historical
Smithsonian volcano number: 284120

Significant eruptions

NOAA records eruptions that killed, did damage, were very large, or set off a tsunami or earthquake.

None on record.

Around it

The volcanoes within 300 km.

Earthquakes near Ioto Volcanic ash advisories on the live map

Sources

Volcanoes and significant eruptions from NOAA’s National Centers for Environmental Information, Global Historical Hazard Database, cited as NCEI/WDS, doi:10.7289/V5PN93H7. Public domain. Read 2026-09-24. Volcano numbers are the Smithsonian Institution’s Global Volcanism Program’s.