Akahaniyama

...It is called "Aizune" in the Eastern Song of the Manyoshu, and is also familiar in the folk song "Aizu Bandaisan." Numanodaira Crater's crater walls have been destroyed by eroded valleys such as Biwazawa, and as a result, the mountain is divided into three peaks: the main peak Obandaisan (1,819m), Kushigamine (1,636m), and Akahaniyama (1,427m). This is an old crater that erupted in 806 (Daido 1). Inside the crater are large and small swamps and high moors, and the lush growth of moss is particularly notable.

*Some of the terminology that refers to "Akhanyama" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…《万葉集》の東歌に〈会津嶺（あいづね）〉と詠まれ，民謡《会津磐梯山》でも親しまれている。沼ノ平火口は琵琶沢などの浸食谷によって火口壁が破壊され，このため山頂が主峰の大磐梯山(1819m)，櫛ヶ峰(1636m)，赤埴（あかはに）山(1427m)の3峰に分かれている。この火口は806年(大同1)に爆発した古い噴火口で，火口内には大小の沼や高層湿原があり，コケ類の繁茂が特に顕著である。…

※「赤埴山」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報