Mount Adatara (安達太良山, Adatara-yama) is a stratovolcano in Fukushima Prefecture, Japan.
It is located about 15 kilometres southwest of the city of Fukushima and east of Mount Bandai. Its last known eruption was in 1996. An eruption in 1900 killed 72 workers at a sulfur mine located in the summit crater.
The Ōu Mountains (奥羽山脈, Ōu-sanmyaku) are a mountain range in the Tōhoku region of Honshū, Japan. It is the longest range in Japan and stretches 500 km (311 mi) south from the Natsudomari Peninsula of Aomori Prefecture to the Nasu volcanoes at the northern boundary of the Kantō region. Though long, the range is only about 35 kilometres (22 mi) wide. The highest point in the range is Mount Iwate, 2,038 metres (6,686 ft).
The range includes several widely known mountains: Hakkōda Mountains, Mount Iwate, Mount Zaō, Mount Azuma, Mount Yakeishi, and Mount Adatara.
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