Bushugaike is located in the central part of the Niu mountain range with alignment of Rokusho-zan, Ochi-zan, etc. It has been believed and transferred by word of mouth that the pond emerged when once upon a time rocks and earth avalanched by a landslide were dammed. Surrounded with the virgin forest of beech trees, the pond is full to the brim all the year round, which creates a kind of mysterious atmosphere. The surface of the pond with the reverse images of surrounding mountains also gives you some profound and solemn impression. There has been a Dragon God (Ryujin) legend around this pond and it used to be known as a place for rainmaking rituals (amagio). In the Edo period the great rainmaking rituals were performed by the hand of a Shinto practitioner who had the ashram at Kamimaki village at the foot. Still today the rain-making ritual of “Ryujin Festival” is held every August, and the area is crowded with hundreds of mountain hikers in the rolling drums of Ryujin Daiko.