Azumane Yama, Mountain summit in Iwate Prefecture, Japan

Azumane Yama is a summit in the Ōu Mountains of Iwate Prefecture, rising to about 928 meters above sea level. The peak offers hiking routes through dense forests and rocky slopes with views across the surrounding mountain landscape.

Azumane Yama is one of the Shiwa Sanzan, together with Nanshan and Akabayashi-yama (or Hakogamori). Shiwa Town enacted an ordinance on 14 September 2023 establishing 28 September as Azumane Yama Day, the date taken from the mountain's height of about 928 metres. The mountain's summit is a Pliocene granodiorite porphyry intrusion into Miocene tuff, a volcanic neck that stands out above the surrounding terrain.

Shiwa Town enacted an ordinance on 14 September 2023 designating 28 September as Azumane Yama Day, a date chosen to match the mountain's height of about 928 metres. The town uses the day to deepen residents' understanding of the mountain and to pass its value on to later generations.

Access is possible via marked trails from multiple starting points, with routes that vary in difficulty. Spring and autumn provide the best conditions for climbing due to stable weather and clear visibility.

The summit is a Pliocene granodiorite porphyry volcanic neck intruded into Miocene tuff, rising above the surrounding terrain together with nearby Nanyama and Dokugamori. Shiwa Town designated 28 September as Azumane-san Day in 2023, the date taken from the mountain's height of about 928 metres.