Mount Io
硫黄山
An active 1580-meter volcanic peak in the Kuju Mountains known for its history of sulfur mining and dramatic gas emissions.
What it is
- An active volcano standing at 1580 meters in the Kuju Mountains of Oita Prefecture.
- A former commercial sulfur mining site that operated from the Edo period until 1972.
- A peak on the eastern ridge of Mount Hossho that constantly emits volcanic gases.
- A site with a history of eruptions occurring approximately every 1000 years.
What to see
- Constant emissions of volcanic gases from the active peak.
- The Kitansenrigahama area which lacks vegetation due to the presence of volcanic gases.
- The Yamanami Highway which was constructed on former sulfur transport roads.
When to go
- The area is currently designated as off-limits to visitors due to volcanic activity.
Notes written by Japan Gems from facts in Japanese Wikipedia.
Where it is
Mount Io Open in Google Maps
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