Mount Ido

...The mountain range is divided into the Northern Hakkoda Volcanic Group and the Southern Hakkoda Volcanic Group by the valley of the Arakawa River, which runs west, and the Tsuta River, which runs east. The Northern Hakkoda Volcanic Group consists of the peaks Maedake, Tamoyatsudake (1324m), Akakuradake (1548m), Idodake (1550m), Odake (1585m, highest peak), and Iodake, which are lined up from north to south, and the peaks Takada Odake (1552m), Kodake, and Hinadake, which are lined up from east to west.

*Some of the terminology that mentions "Ido-dake" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…山群の中を西流する荒川と東流する蔦（つた）川の谷を境として北八甲田火山群と南八甲田火山群に分けられる。　北八甲田火山群は南北に並ぶ前岳，田茂萢（たもやつ）岳(1324m)，赤倉岳(1548m)，井戸岳(1550m)，大岳(1585m。最高峰)，硫黄岳と，東西に並ぶ高田大岳(1552m)，小岳，雛岳の諸峰からなる。…

※「井戸岳」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