Mt. Kosumoyama

Mt. Kosumoyama is a mountain with an altitude of 2614m that straddles Iijima Town, Kamiina District, Nagano Prefecture and Okuwa Village, Kiso District.It is located on the main ridgeline in the southern part of the Kiso Mountains (Central Alps) leading to Mt. Minami Komagatake in the north and Okunenjodake in the south.Another name is Mt. Kosmo.The surrounding mountain range of the Kiso Mountains was designated as the Chuo Alps Prefectural Natural Park in Nagano Prefecture in 1951 (Showa 26) 43791.The north side of Mt. Kosumoyama (elevation 2,569 m) to the south of the summit is the alpine zone, and the south side is the subalpine zone.The ridgeline area belongs to the Ryoke metamorphic belt and is composed of grayish white Inagawa coarse-grained granodiorite.At the summit, there is a large granite rock and a third triangulation station (point name "Koshimo").Near the summit is the forest limit of weathered gravel, and alpine plants such as Phyllodoce aureus, Stellaria nipponica, Gentiana algida, and Leontopodium shienii can be seen.Betula ermanii is mixed in the coniferous forest below it, and Kumazasa and subalpine plants are distributed on the bottom of the forest.The upper part of the mountain covered with pinus pumila is a gentle feminine mountain.The mountaintop has a good view, and you can see the Akaishi Mountains (Southern Alps) to the east, Mt. Fuji over its ridgeline, the surrounding mountains of the Central Alps, and Mt. Hakusan, Mt. Ontake, Mt. Norikura, and Mt. Hotaka to the west.It has been selected as one of Japan's 30 Famous Mountains and Shinshu XNUMX Famous Mountains. There is a theory that this name was given because it is necessary to cross many peaks (for example, hundreds of peaks) to climb Mt. Kosumoyama.In addition to the vertical runway on the main ridge of the Kiso Mountains, there are mountain trails from both the Ina side and the Kiso side.During the snowy season, a cornice may overhang on the eastern Ina side of the ridgeline.The summit is located on the main ridgeline of the Central Alps and is a north-south vertical route.From north to south, there are mountains such as Mt. Utsugidake – Mt. Minami Komagatake – Sengairei – Mt. Kosumoyama – South Mt. Kosumoyama – Okunenjodake – Mt. Anpeijiyama – Mt. Surikogi.The vertical runway of the Central Alps is maintained from the north to the south Mt. Kosumoyama, but the area south of the south Mt. Kosumoyama has been covered with deep bamboo bushes since the large-scale felling of trees in the XNUMX's. Since the mountain climbing route is unclear, it is a route for experts.For this reason, when traversing the Central Alps from the north, many people avoid the course from south Mt. Kosumoyama near Mt. Yabu to Mt. Anpeijiyama and end the traverse at Mt. Kosumoyama.