Mount Iō

硫黄岳

A remote 2,553-meter peak in the Hida Mountains known for its colorful granite ridge and nearby natural geyser cones.

What it is

A 2,553-meter mountain peak located at the end of the Io Ridge in Nagano Prefecture.
Part of the Hida Mountains featuring a third-class triangulation point named Yakeyama.
A rugged landscape characterized by distinct reddish-brown and yellowish-white granite formations.

Geyser cones at the foot of the mountain designated as a national natural monument.
The Yumata Hot Spring located at the base of the mountain slopes.
Views of the surrounding Hida Mountains from the 2,553.8-meter elevation point.
Exposed granite ridges showing unique color variations from mineral deposits.

Notes written by Japan Gems from facts in Japanese Wikipedia.