When Susano went down to Mt. Torikami (now Mt. Sentsu) of Izumo Province, in Ashihara no nakatsukuni, he exterminated Yamatanoorochi (eight-forked snake), which was devastating the land, and gave Amaterasu Omikami an Ama no Murakumo no Tsurugi Sword (which was derived from the tale of Yamatanoorochi).
葦原中国にある出雲国の鳥髪山（現在の船通山）へ降ったスサノオは、その地を荒らしていたヤマタノオロチ（八俣遠呂智）を退治し、八岐大蛇の尾から出てきた天叢雲剣を天照大神に献上した。