Mount Iō, Stratovolcano in Shiretoko Peninsula, Japan.
Mount Iō rises to 1,562 meters above sea level, featuring steep slopes made of andesite rock and emitting steam through numerous volcanic vents.
The volcanic formation has shaped the geography of Shiretoko Peninsula throughout the Holocene period, contributing to the current landscape of Hokkaido.
The mountain sits between Shari and Rausu towns, where local communities celebrate the Mount Rausu Opening Festival each July 3rd to mark climbing season.
Guided treks to Mount Iō operate year-round, taking approximately five hours to complete and requiring advance reservations through Tsuruga Adventure Base.
The volcano displays electric-yellow sulfur crystals across its surface, creating a geological display that changes with ongoing volcanic activity.
Location: Shari
Location: Rausu
Elevation above the sea: 1,562 m
Made from material: andesite
Part of: Shiretoko Peninsula
GPS coordinates: 44.13329,145.16129
Latest update: May 19, 2025 12:37
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