According to lore, its name is derived from the fact that at one time, its ridge had a deep sag which was called "Hazama" when it was viewed from the opposite ridge in the basin region.
名前の由来は盆地であるこの地域の、峠と反対側の尾根から山際を眺めた際、この峠の尾根がV字に凹んでおり、これを狭間と呼んだとの伝承が残っている。