Mountains where Shugendo (Japanese mountain asceticism-shamanism incorporating Shinto and Buddhist concepts) training is conducted are called Buchu, and a training course starting in Kumano, located in the south, and finishing in Yoshino is referred to as Junbu while a training course where one starts in Yoshino and climbs and descends mountains is referred to as Gyakubu.
修験道練行の山々を峰中（ぶちゅう）と呼び、南の熊野を発して吉野に至るのを順峰、吉野からの縦走を逆峰と呼んだ。