| 1．Mount Iō (Yatsugatake) |
| Mount Iō (硫黄岳, Iō-dake) is a mountain on the border of Chino and Minamimaki, Nagano Prefecture, Japan. This mountain is one of the major mountains of Yatsugatake Mountains. Mount Iō literally means, sulphur mountain. |
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| 2．Northern Yatsugatake Volcanic Group |
| Northern Yatsugatake Volcanic Group (北八ヶ岳, Kita-Yatsugatake) is a volcanic group of stratovolcanoes and lava domes located in Nagano Prefecture on Honshū in Japan. |
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| 3．Mount Neishi |
| Mount Neishi (根石岳, Neishi-dake) is a 2,603m mountain on the border of Chino and Koumi of Nagano in Japan. This mountain belongs to Northern Yatsugatake Volcanic Group. |
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