Ou Mountains, Mountain range in Tōhoku region, Japan
The Ou Mountains stretch roughly 500 kilometers from Aomori Prefecture to Fukushima Prefecture, reaching a highest point of 2,038 meters at Mount Iwate. The range extends through six prefectures and forms a continuous mountain system with varying elevations and terrain types.
The range served as a natural boundary between the ancient provinces of Mutsu and Dewa in early Japan. The name combines characters from both territories, preserving this historical division in its designation.
The range contains many hot spring facilities where visitors experience traditional Japanese bathing in natural thermal waters. These places are woven into the daily life and wellness practices of people living nearby.
Multiple hiking trails cross the range with access points near train stations in Aomori, Morioka, and Fukushima. Timing your visit to spring or autumn offers the most comfortable weather conditions for mountain exploration.
The range contains a chain of active volcanoes including Hakkōda, Iwate, Sugawa, Funagata, Zaō, Azuma, and Bandai, creating distinct geological formations. This volcanic activity shapes the landscape today and drives the creation of the thermal resources found throughout.
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