Mount Yogai or Yogaiyama is located in the Sekisuiji district in the city of Kofu in Yamanashi Prefecture, Japan. It is a low mountain with the elevation of 770 meters (2,530 ft). The Takeda clan built a fortress in the mountain to barricade themselves in an emergency.
https://yamanashi–hiking100-jp.translate.goog/course/detail/89?_x_tr_sl=ja&_x_tr_tl=en&_x_tr_hl=en; https://en.wikipedia.org/wiki/Y%C5%8Dgaiyama_Castle; https://kofu-tourism.com/en/see-and-do/440; (In Japanese) https://www.rinya.maff.go.jp/kanto/yamanasi/invitation/pdf/map.pdf
Looking the Kofu Basin and the trail to Mount Yogai, Sekisuiji, Kofu, Yamanashi, 9/22/2025
Mount Yogai and trail signs, Sekisuiji, Kofu, Yamanashi, 9/22/2025
Sacred rock and statues of Takeda Fudoson (Achala Vidyaraja) and Kannon (Avalokiteśvara) and a shrine, Sekisuiji, Kofu, Yamanashi, 9/22/2025
White Tip Spikemoss (Selaginella tamariscina), Sekisuiji, Kofu, Yamanashi, 9/22/2025
https://en.wikipedia.org/wiki/Selaginella_tamariscina
Marasmius maximus Hongo, Sekisuiji, Kofu, Yamanashi, 9/22/2025
(In Japanese) https://mikawanoyasou.org/kinoko/oohouraitake.htm; https://ja.wikipedia.org/wiki/%E3%82%AA%E3%82%AA%E3%83%9B%E3%82%A6%E3%83%A9%E3%82%A4%E3%82%BF%E3%82%B1
Birch polypore (Fomitopsis betulina), Sekisuiji, Kofu, Yamanashi, 9/22/2025
https://en.wikipedia.org/wiki/Fomitopsis_betulina; https://ncslg.cals.ncsu.edu/piptoporous-betulinus-bull-fr-karst/; https://www.jataff.or.jp/kinoko/0306/19.htm
Stinking dapperling (Lepiota cristata), Sekisuiji, Kofu, Yamanashi, 9/22/2025
https://en.wikipedia.org/wiki/Lepiota_cristata; https://www.inaturalist.org/taxa/58694-Lepiota-cristata
Physcia orientalis KASHIW, Sekisuiji, Kofu, Yamanashi, 9/22/2025
https://mikawanoyasou.org/tiirui/siromukadegoke.htm; https://www.chiba-muse.or.jp/NATURAL/chii_boso/genus/physcia.html